The Early Church and Peter's Primacy

The Decretum Gelasianum: The Council of Rome (494) on the Books to Be Received and Not Received by the Catholic Church

Synopsis: The decree of Pope Gelasius I, issued at a Roman council of seventy bishops in 494, declaring that the Holy Roman Catholic and Apostolic Church has obtained primacy over all other Churches not by any synodal decree but by the evangelical voice of the Lord, who said to Peter “Thou art Peter, and upon this rock I will build my Church” — establishing the canonical books of the Old and New Testaments received by the Roman Church (the full Catholic canon, including Wisdom, Sirach, Tobit, Judith, the Maccabees, and the seven deuterocanonical books); enumerating the three sees of Peter (Rome having neither stain nor wrinkle, Alexandria founded through Mark, and Antioch where Peter dwelt before coming to Rome) with no place given to Constantinople; receiving the four ecumenical councils through Chalcedon while silently passing over their canons that elevated Constantinople; receiving the works of the orthodox Fathers — Cyprian, Gregory Nazianzen, Basil, Athanasius, Cyril, John Chrysostom, Theophilus, Hilary, Ambrose, Augustine, Jerome, Prosper — and the Tome of Pope Leo to Flavian, the disputing of even a single iota of which incurs anathema; rejecting the Synod of Ariminum and a long catalogue of apocryphal works; and naming as condemned heresiarchs Simon Magus, Marcion, Arius, Macedonius, Nestorius, Eutyches, Dioscorus, and culminating in Acacius of Constantinople with his associates — all bound under the indissoluble bond of anathema for eternity.

Some Concerning the Councils Celebrated under Gelasius — The First Roman Council, in which by seventy bishops the sacred and authentic books were distinguished from the apocrypha, under Gelasius, in the year of the Lord 494, in the consulship of Asterius and Praesidius.

Editorial Preface — On the Council’s Purpose (Severinus Binius)

The note that follows is not part of the original decree but the editorial commentary of Severinus Binius (1573-1641), the Cologne canonist whose great edition of the councils first integrated this material into the modern critical apparatus and whose framing introduces the document in the Patrologia Latina. We translate it here, marked clearly as Binius’s editorial work, because it usefully orients the reader to the council’s purposes as the early modern Catholic editorial tradition understood them.

To preserve the Catholic faith inviolate, to remove dissensions, and to restore peace in the Church, the Pontiff together with the council labored above all to this end: that the communion of the Apostolic and Catholic Church should be sprinkled with no spot or even slight stain, but should be preserved entirely undefiled, intact, and secure in all things. To accomplish this, applying a more solicitous care, he wished not only that the Church herself be vindicated from all heresies and from the company of heretics — as she has always been kept immune — but also that he might render her secure from the contagion of perverse writings: applying every effort, he made a discrimination of the ecclesiastical books which had hitherto been customarily edited and read; distinguishing and separating, as if [with] the mouth of the Lord, the clean from the unclean, and discerning the precious from the vile. To bring this matter to its perfection, he established a decree to be perpetually preserved by the Catholic Church, in which, after the books of the Old and New Testament canonical have been recounted, he added concerning the primacy of the Roman Church and of the rights of the other patriarchal churches, for repressing the presumption and audacity of the bishops of Constantinople, by which Acacius first, then his successors, had insolently risen up exceedingly against the Roman Church. Severus Binius.

Almost all the books of the Old Testament here recited, and contained in the canon of the sacred books, are the same as those enumerated above in the last canon of the Council of Laodicea, and in the 47th canon of the Council of Carthage III, and likewise in the third epistle of Innocent I to Exuperius. We have shown copiously above, in the notes on the same canon, that the 84th of the Apostolic Canons — by which the sacred books are omitted and the apocryphal are added among the sacred — is spurious and illegitimate. The sacred books of the Old and New Testaments have been most learnedly and copiously vindicated from the calumny of all heretics by the most reverend and most illustrious Cardinal Bellarmine in the entire first book of his work On the Written Word of God; the most illustrious Cardinal Baronius likewise, in various places of the first volume of his Annals, has vindicated the epistles of Saint Paul and the other canonical epistles together with the Apocalypse of Saint John the Apostle from the rage and madness of heretics: to avoid prolixity, I direct the benevolent reader to those works. Concerning the apocryphal books and their authors, Baronius has noted things most worthy of observation in various places of his Annals, and after him Antonius Possevinus in his Apparatus Sacer. Severus Binius.

I. The Order of the Books of the Old and New Testaments Received by the Holy Roman Church

The order of the books of the Old Testament, which the Holy and Catholic Roman Church receives and venerates, arranged by the blessed Pope Gelasius I together with seventy bishops.

The book of Genesis, one book.
The book of Exodus, one book.
The book of Leviticus, one book.
The book of Numbers, one book.
The book of Deuteronomy, one book.
The book of Jesus son of Nun [Joshua], one book.
The book of Judges, one book.
The book of Ruth, one book.
The books of the Kingdoms [Kings], four books.
The books of Paralipomenon [Chronicles], two books.
The 150 Psalms, one book.
The three books of Solomon:
  Proverbs,
  Ecclesiastes, and
  Canticle of Canticles [Song of Songs].
Likewise the book of Wisdom, one book.
The book of Ecclesiasticus [Sirach], one book.
Likewise the order of the Prophets:
The book of Isaiah, one book.
The book of Jeremiah, one book, with Cinoth, that is, his lamentations.
The book of Ezekiel, one book.
The book of Daniel, one book.
The book of Hosea, one book.
The book of Amos, one book.
The book of Micah, one book.
The book of Joel, one book.
The book of Obadiah, one book.
The book of Jonah, one book.
The book of Nahum, one book.
The book of Habakkuk, one book.
The book of Zephaniah, one book.
The book of Haggai, one book.
The book of Zechariah, one book.
The book of Malachi, one book.
Likewise the order of the Histories:
The book of Job, one book — omitted by some others.
The book of Tobit, one book.
The book of Esdras, one book.
The book of Esther [Hester], one book.
The book of Judith, one book.
The book of Maccabees, one book [variant: two books].

Likewise the order of the Scriptures of the New and Eternal Testament, which the Holy Catholic Roman Church receives and venerates.

The four books of the Gospels:
  According to Matthew, one book.
  According to Mark, one book.
  According to Luke, one book.
  According to John, one book.
The book of the Acts of the Apostles, one book.
The Epistles of the Apostle Paul, fourteen in number:
  To the Romans, one epistle.
  To the Corinthians, two epistles.
  To the Galatians, one epistle.
  To the Thessalonians, two epistles.
  To the Ephesians, one epistle.
  To the Philippians, one epistle.
  To the Colossians, one epistle.
  To Timothy, two epistles.
  To Titus, one epistle.
  To Philemon, one epistle.
  To the Hebrews, one epistle.
Likewise the Apocalypse of John, one book.
Likewise the Canonical Epistles, seven in number:
  Of the Apostle James, one epistle.
  Of the Apostle Peter, two epistles.
  Of the Apostle John, three epistles.
  Of the Apostle Jude the Zealot, one epistle.

II. The Decree of Pope Gelasius, Issued With Seventy Bishops, Concerning Apocryphal Scriptures — and the Three Sees of Peter

Decree of Pope Gelasius, issued with seventy most learned bishops, on the books to be received and not to be received.

After all these prophetic and evangelical and apostolic Scriptures, on which the Catholic Church through the grace of God is founded, we have thought it should also be intimated that, although the universal Catholic Church diffused throughout the world is the one bridal chamber of Christ, nevertheless the Holy Roman Catholic and Apostolic Church has been preferred to the other Churches by no synodal decrees, but has obtained the primacy by the evangelical voice of our Lord and Savior, who said: Thou art Peter, and upon this rock I will build my Church, and the gates of hell shall not prevail against it; and I will give thee the keys of the kingdom of heaven, and whatsoever thou shalt bind upon earth shall be bound also in heaven, and whatsoever thou shalt loose upon earth shall be loosed also in heaven (Matt. 16).

To which [Roman Church] there has also been given the fellowship of the most blessed Paul, the apostle, the vessel of election, who, not at a different time, as the heretics babble, but at one time and on one and the same day, by a glorious death, contending together with Peter in the city of Rome under Caesar Nero, was crowned [with martyrdom]; and equally they consecrated the aforesaid holy Roman Church to Christ the Lord, and by their presence and venerable triumph they preferred it before all other cities in the whole world.

The first see, therefore, is that of Peter the Apostle, of the Roman Church, having neither stain nor wrinkle nor anything of this kind (Eph. 5).

The second see, however, was consecrated at Alexandria in the name of blessed Peter by Mark, his disciple and evangelist; he, sent by the apostle Peter into Egypt, preached the word of truth and consummated a glorious martyrdom.

The third see, however, is held honorable at Antioch in the name of the same most blessed apostle Peter, because he dwelt there before he had come to Rome, and there first the name of “Christians” arose for the new people.

III. The Reception of the Holy Synods by the Roman Church

Now therefore is to be subjoined [a list] of the works of the holy Fathers which are received in the Catholic Church.

And although no other foundation can anyone lay than that which has been laid, which is Christ Jesus (1 Cor. 3), nevertheless, for our edification, the same Holy Roman Church does not prohibit these writings — that is, the [writings] of those Fathers, after the books of the Old and New Testament which we have set forth above as regularly received — also to be received: that is to say,

The holy synod of Nicaea, of three hundred and eighteen Fathers, mediating the most great Constantine Augustus, in which Arius the heretic was condemned.

The holy synod of Constantinople, mediating Theodosius the Elder Augustus, in which Macedonius the heretic suffered the due condemnation.

The holy synod of Ephesus, in which Nestorius was condemned with the consent of the most blessed Pope Celestine, by Cyril the prelate of the Alexandrian see and Arcadius the bishop sent from Italy.

The holy synod of Chalcedon, mediating Marcian Augustus and Anatolius bishop of Constantinople, in which the Nestorian and Eutychian heresies, together with Dioscorus and his accomplices, were condemned.

But also if there are any councils up till now instituted by the holy Fathers, after the authority of these four, we decree that they are both to be guarded and to be received.

IV. The Reception of the Works of the Orthodox Fathers

Now is to be subjoined [a list] of the works of the holy Fathers which are received in the Catholic Church.

Likewise the works of blessed Cyprian, martyr and bishop of Carthage, are to be received in all things.

Likewise the works of blessed Gregory Nazianzen, bishop.

Likewise the works of blessed Basil, bishop of Cappadocia.

Likewise the works of blessed Athanasius, bishop of Alexandria.

Likewise the works of blessed Cyril, bishop of Alexandria.

Likewise the works of blessed John, bishop of Constantinople.

Likewise the works of blessed Theophilus, bishop of Alexandria.

Likewise the works of blessed Hilary, bishop of Poitiers (or, alternatively in some manuscripts, Proterius bishop of Alexandria).

Likewise the works of blessed Ambrose, bishop of Milan.

Likewise the works of blessed Augustine, bishop of Hippo (or, in some manuscripts, Hipporegiensis).

Likewise the works of blessed Jerome, presbyter.

Likewise the works of the most religious man Prosper.

Likewise the epistle of blessed Pope Leo, sent to Flavian bishop of Constantinople — concerning whose text [al. any portion of which text] if anyone shall have disputed even down to a single iota, and shall not have venerably received it in all things, let him be anathema.

Likewise the works and treatises of all orthodox Fathers, who in nothing have deviated from the fellowship of the Holy Roman Church, nor have been separated from her faith and preaching, but through the grace of God have been participants in her communion until the last day of their life — we decree that these are to be read.

Likewise the decretal letters which the most blessed popes at various times from the city of Rome gave forth at the consultation [al. for the consolation] of various Fathers, are to be venerably received.

Likewise the acts of the holy martyrs, who shine with the manifold trials of their torments and the marvelous triumphs of their confessions [al. are illustrated by]. Who among Catholics could doubt that they suffered greater things in their agonies, and that they bore all things not by their own strengths but by the grace and help of God? But for this reason, according to ancient custom and out of singular caution, in the Holy Roman Church they are not read, because the names of those who wrote them are entirely unknown, and they are thought to have been written either by unbelievers or by persons of little learning, with superfluous matter or with less suitable matter than the order of events required — as for instance the passion of a certain Quiricus and Julitta, as for instance of Georgius and others of this sort, the passions of which are reported to have been composed by heretics. On account of which, as has been said, lest even the slightest occasion of mockery should arise, in the Holy Roman Church they are not read. Yet we, with the aforesaid Church, venerate with all devotion all the martyrs and their glorious agonies, who are known more to God than to men.

Likewise the Lives of the Fathers — Paul, Anthony, Hilarion, and all the hermits — which the most blessed Jerome described, we receive with all honor.

Likewise the Acts of blessed Sylvester, prelate of the Apostolic See — even though the name of him who wrote them is unknown, by many in the city of Rome we have learned that they are read by Catholics, and on account of ancient usage many churches imitate this.

Likewise the writing concerning the Discovery of the Lord’s Cross, and other writings concerning the Discovery of the Head of John the Baptist are some recent narrations [al. some particular ones], and some Catholics read them. But when these come into the hands of Catholics, let the sentence of the blessed apostle Paul precede: Test all things; hold fast to that which is good (1 Thess. 5:21).

Likewise Rufinus, a religious man, edited many works of ecclesiastical character and also expounded some of the Scriptures. But because the most blessed Jerome marked him in some matters concerning Free Will, we hold the same opinion that we know the said blessed Jerome held; and not only concerning Rufinus, but also concerning all whom the man often-mentioned, with the zeal of God and the religion of faith, has reproved.

Likewise we receive certain works of Origen for reading, which the most blessed Jerome does not repudiate; but the rest, with their author, we say must be repudiated.

Likewise the Chronicles of Eusebius of Caesarea and the books of his Ecclesiastical History — although in the first book of his narrative he was lukewarm, and afterwards in the praise and excuse of Origen the schismatic he has compiled one book — yet on account of the singular knowledge of these things which pertains to instruction, [these works of Eusebius] we say must by no means be repudiated.

Likewise we praise Orosius, a most learned man, because he composed for us against the calumnies of the pagans a most necessary History, and wove it together with marvelous brevity.

Likewise the venerable man Sedulius’s Paschal work, which he wrote in heroic verses, with distinguished praise we put forward.

Likewise we do not despise the laborious work of Juvencus, but rather we admire it.

The other writings, however, which by heretics or schismatics have been compiled or proclaimed, the Catholic and Apostolic Roman Church in no way receives; of which a few which have come to memory and are to be avoided by Catholics, we have believed must be subjoined.

V. Notice of the Apocryphal Books Which Are Not Received

In the first place, the Synod of Ariminum, gathered by Constantius Caesar, son of Constantine Augustus, mediating Taurus the Prefect, both then and now and unto eternity, we confess to be condemned.

Likewise the Itinerary in the name of the apostle Peter, which is called the books of Saint Clement [in some manuscripts ten, in others nine or eight] — apocryphal.

The Acts in the name of Andrew the apostle — apocryphal.

The Acts in the name of Thomas the apostle, ten books — apocryphal.

The Acts in the name of Peter the apostle — apocryphal.

The Acts in the name of Philip the apostle — apocryphal.

The Gospel in the name of Thaddaeus — apocryphal.

The Gospel in the name of Matthias — apocryphal.

The Gospel in the name of Peter the apostle — apocryphal.

The Gospel in the name of James the Less — apocryphal.

The Gospel in the name of Barnabas — apocryphal.

The Gospel in the name of Thomas, which the Manichaeans use — apocryphal.

The Gospel in the name of Bartholomew the apostle — apocryphal.

The Gospel in the name of Andrew the apostle — apocryphal.

The Gospels which Lucianus falsified — apocryphal.

The Gospels which Hesychius falsified — apocryphal.

The Book concerning the Infancy of the Savior — apocryphal.

The Book concerning the Nativity [al. Infancy] of the Savior, and concerning Mary and the Midwife [al. her midwife] — apocryphal.

The Book which is called The Shepherd — apocryphal.

All books which Leucius [al. Lucius], the disciple of the devil, made — apocryphal.

The Book which is called Foundation — apocryphal.

The Book which is called Treasure — apocryphal.

The Book concerning the Daughters of Adam, the Genesis [or Lesser Genesis] — apocryphal.

The Cento concerning Christ, woven together from Virgilian verses — apocryphal.

The Book which is called Acts of Thecla and Paul the apostle — apocryphal.

The Book which is called Nepotis [al. Nepotes] — apocryphal.

The Book of Proverbs which has been written by heretics and pre-titled in the name of Saint Sixtus — apocryphal.

The Revelation which is called of Paul the apostle — apocryphal.

The Revelation which is called of Thomas the apostle — apocryphal.

The Revelation which is called of Saint Stephen — apocryphal.

The Book which is called Transitus, that is, the Assumption of holy Mary — apocryphal.

The Book which is called Repentance of Adam — apocryphal.

The Book of Ogias [al. Vegia, Eugenia], in the name of the giant who is feigned by heretics to have fought with a dragon after the Flood — apocryphal.

The Book which is called Testament of Job — apocryphal.

The Book which is called Repentance of Origen — apocryphal.

The Book which is called Repentance of Saint Cyprian — apocryphal.

The Book which is called Repentance of Jamnes and Mambres — apocryphal.

The Book which is called Lots of the Holy Apostles — apocryphal.

The Book which is called Praise [al. Game; the Latin variant is Laus or Lusus] of the Apostles — apocryphal.

The Book which is called Canons of the Apostles — apocryphal.

The Book of Physiologus, which has been written by heretics and is pre-titled in the name of blessed Ambrose — apocryphal.

The History of Eusebius Pamphilus — apocryphal.

The Works of Tertullian — apocryphal.

The Works of Lactantius [al. Firmianus] — apocryphal.

The Works of Africanus — apocryphal.

The Works of Postumianus and Gallus [al. Galli] — apocryphal.

The Works of Montanus, Priscilla, and Maximilla — apocryphal.

All the works of Faustus the Manichaean — apocryphal.

The Works of Commodianus — apocryphal.

The Works of the other Clement of Alexandria — apocryphal.

The Works of Tatius [al. Tarsicius, Tascius] Cyprianus — apocryphal.

The Works of Arnobius — apocryphal.

The Works of Tychonius — apocryphal.

The Works of Cassian, presbyter of the Gauls [al. Cassion] — apocryphal.

The Works of Victorinus of Poitiers [al. Petabion, that is, Petau] — apocryphal.

The Works of Faustus of Riez of the Gauls — apocryphal.

The Works of Frumentius the Blind — apocryphal.

The Letter of Jesus to King Abgar [al. Abgarus] — apocryphal.

The Letter of Abgar [al. Abgarus] to Jesus — apocryphal.

The Passion of Quiricus [al. Cyricus] and Julitta — apocryphal.

The Passion of Georgius — apocryphal.

The Writing which is called the Contradiction [al. Interdiction] of Solomon — apocryphal.

All Phylacteries which are not by the names of angels (as those who fashion them feign), but rather by the names of demons have been written — apocryphal.

The Closing Anathema — On the Heresiarchs and Their Followers

These and similar things, which Simon Magus, Nicolaus, Cerinthus, Marcion, Basilides, Ebion, Paul of Samosata also, Photinus and Bonosus who failed by similar error; Montanus too with his most obscene followers; Apollinaris, Valentinus or the Manichaean, Faustus, the African, Sabellius, Arius, Macedonius, Eunomius, Novatus, Sabbatius, Callistus, Donatus, Eustathius, Jovinianus, Pelagius, Julian of Eclanum, Caelestius [al. Coelestinus], Maximinus [al. Maximianus], Priscillian from Spain, Nestorius of Constantinople, Maximus the Cynic [al. Unicus], Lampetius [al. Lapicius], Dioscorus, Eutyches, Peter, and another Peter — of whom one stained Alexandria, the other Antioch; Acacius of Constantinople with his associates [al. with his companions]; and not only [these] but also all heresiarchs and their disciples, or schismatics, taught or wrote — whose names are very little retained — not only are they repudiated, but also from the entire Roman Catholic and Apostolic Church are they eliminated; and with their authors and the followers of their authors, under the indissoluble bond of anathema, we confess that they are eternally condemned.

Source/Reference

Notes / Historical Commentary

The Decretum Gelasianum is one of the most important documents in the patristic Roman corpus, and certainly the single most cited patristic document in Catholic discussions of the canonical scriptures. Issued at a council of seventy bishops convened by Pope Gelasius I in Rome in 494 — in the active middle of the Acacian Schism — the decree articulates with unusual precision and structural coherence the Roman magisterial position on four interrelated questions: which books constitute Sacred Scripture, by what authority the Roman Church discriminates received from rejected writings, which councils and patristic Fathers are received as authoritative, and which works are to be rejected as apocryphal. The reader will note that the decree’s authority for the Catholic teaching it expresses does not depend on settling the contested authorship question (Damasus, Gelasius, or Hormisdas) that critical scholarship has raised; what is preserved in this document is the explicit and unmistakable Roman magisterial teaching of the late fifth and early sixth centuries on these foundational matters.

The structural movement of the decree is theologically tight. Section I establishes the canonical Scriptures of the Old and New Testaments — the full Catholic canon, including the seven deuterocanonical books later removed from the Protestant canons. Section II then establishes the doctrinal premise on which the Roman Church’s discrimination of received from rejected works rests: the universal primacy of the Roman See, given to it not by any synodal decree or imperial recognition but by the evangelical voice of the Lord himself, who said to Peter, “Thou art Peter, and upon this rock I will build my Church.” Section III applies that authority to the conciliar inheritance — receiving the four ecumenical councils through Chalcedon while silently passing over their disciplinary canons that elevated Constantinople. Section IV applies it to the patristic deposit — receiving twelve great Fathers (Cyprian, Gregory Nazianzen, Basil, Athanasius, Cyril, John Chrysostom, Theophilus, Hilary, Ambrose, Augustine, Jerome, Prosper) and the Tome of Pope Leo with the unprecedented anathema attaching to anyone who disputes even a single iota of its text. Section V applies it negatively, to the apocrypha and the heresiarchs — culminating in the closing list that places Acacius of Constantinople among Simon Magus, Marcion, Arius, Nestorius, and Eutyches as condemned heresiarchs of the Christian centuries.

The doctrinal climax of the decree is in Section II, where Roman primacy is articulated with a precision rarely matched in the patristic corpus. The Holy Roman Catholic and Apostolic Church, the decree teaches, has been preferred to the other Churches not by any synodal decrees (nullis synodicis constitutis) but has obtained her primacy by the evangelical voice of our Lord and Savior (evangelica voce Domini et Salvatoris nostri primatum obtinuit). The structural premise is decisive: Roman primacy is not granted by council, by emperor, by patriarchal consensus, or by any human ecclesiastical determination. It is grounded directly in the words of Christ himself. The Matt. 16 citation that follows — the full Petrine grant of the rock, the gates of hell, and the keys of the kingdom — is the Lord’s own evangelical voice that the decree invokes. The doctrine articulated is the doctrine that Vatican I would definitively define in Pastor Aeternus in 1870; what the present decree shows is that the doctrine is not a Vatican I innovation but the explicit Roman magisterial position already in 494.

The corollary doctrine articulated immediately afterward — that the first see, the Roman Church, has neither stain nor wrinkle nor anything of this kind (Eph. 5:27) — is the doctrine of the indefectibility of the Roman See in faith. The application of Eph. 5:27 specifically to the Roman Church (the Pauline image’s natural reference being to the universal Church) is theologically pointed: the Roman Church, as the rock on which Christ has built his Church, is the perpetually faithful bride of Christ who does not lose her fidelity, her spotlessness, her freedom from doctrinal wrinkle. The same doctrine would be articulated in the Formula of Hormisdas of 519 (in qua est integra et vera Christianae religionis soliditas — “in which is the entire and true solidity of the Christian religion”) and ultimately defined at Vatican I as the indefectibility of the Roman See in faith. The decree thus articulates in 494 what the broader Roman magisterial tradition would carry forward and develop: the Roman See is doctrinally indefectible because Christ has founded it on Peter as the rock against which the gates of hell shall not prevail.

The three sees of Peter enumerated in Section II — Rome, Alexandria (founded through Mark, Peter’s disciple), and Antioch (where Peter dwelt before coming to Rome) — establish the patriarchal order of the Catholic Church on a strictly Petrine basis. All three sees are sees of Peter; their order reflects the structure of Peter’s apostolic ministry. What is conspicuously absent from the enumeration is Constantinople — and the absence is meaningful. The Constantinopolitan ecclesiology that had developed in the wake of Canon 28 of Chalcedon (451) and the older Canon 3 of Constantinople I (381), which had attempted to elevate Constantinople to a near-equal rank with Rome on the basis of imperial geography (“Constantinople is the new Rome”), is here flatly contradicted. The Petrine order — Rome, Alexandria, Antioch — is the only patriarchal order the Roman magisterium recognizes, and Constantinople has no claim to a place in it. The decree’s silence about Constantinople is not an oversight but a structural doctrinal stance, consistent with Pope Leo’s outright nullification of Canon 28 and the broader Roman tradition’s non-acceptance of Canon 3.

The reception of the four ecumenical councils in Section III preserves the same structural coherence. Nicaea, Constantinople I, Ephesus, and Chalcedon are each received as authoritative — but each on the basis of Roman reception, with the disciplinary canons that elevated Constantinople (Canon 3 of Constantinople I and Canon 28 of Chalcedon) silently passed over. The principle is that a council is ecumenical and binding when received by Rome; the conciliar acts do not authenticate themselves. The pattern is articulated explicitly in the reception of Ephesus, where the decree names Pope Celestine as the principle of consent (consensu beatissimi Coelestini papae), with Cyril of Alexandria and Arcadius the papal legate as the executing agents — exactly the structure Celestine himself articulated in his correspondence with Cyril (the famous Letter 11, “the bishop of Rome judges, the bishop of Alexandria executes”). The structural premise that runs from this decree forward through the medieval and modern periods is one and the same: a council is ecumenical and binding by Roman reception.

The reception of the Tome of Leo in Section IV deserves special attention as one of the most extraordinary statements of papal doctrinal authority in the patristic corpus. The Tome of Leo — Leo’s letter to Flavian of Constantinople of June 449, articulating the doctrine of the two natures in Christ — was the doctrinal foundation of the Council of Chalcedon, where it was acclaimed with the famous cry “Peter has spoken through Leo.” What the decree before us does is structurally remarkable: it raises the Tome to a standard of doctrinal reception more exacting than any standard previously articulated for any patristic document. Anyone who disputes even a single iota of the Tome’s text — that is, even one minimal element of it — and does not venerably receive it in all things is to be anathematized. The phrase usque ad unum iota echoes the Lord’s own statement in Matt. 5:18 (“not one iota or one tittle shall pass from the Law”); the decree is here applying to the Tome of Leo a standard of doctrinal preservation analogous to the standard the Lord applied to the Law itself. The decree is treating the Tome of Leo not merely as one orthodox patristic writing among others but as a doctrinal definition possessing the fullest authority and requiring the fullest reception — the kind of authority that Vatican I’s Pastor Aeternus would later articulate as the infallibility of the Roman pontiff when defining doctrine on faith and morals to be held by the universal Church. The Tome of Leo is here recognized in 494 as having precisely that kind of authority — irreformable, requiring reception even down to a single iota, with anathema attached to those who dispute it.

The reader will note the structural symmetry that holds the entire decree together. The decree opens (Section II) with the Lord’s word to Peter — “whatsoever thou shalt bind upon earth shall be bound also in heaven” — and closes (Section V) by exercising that very binding authority over the heresiarchs and their followers under the indissoluble bond of anathema. The same Petrine authority that establishes the Roman Church as the rock of orthodoxy also exercises the binding judgment that excludes from her fellowship those who have departed from the apostolic faith. The decree’s whole movement is held together by this Petrine framework — the foundation of Roman primacy in the Lord’s word, the discrimination of received from rejected works, and the formal binding judgment against those who teach error. This same framework — Petrine authority exercised in binding and loosing, the indissoluble bond of anathema, the eternal exclusion of those who depart from the faith — runs from the patristic period through the medieval and modern periods to Vatican I and beyond.

The closing heresiarch list deserves particular attention for what it does to Acacius of Constantinople. The Acacian Schism — in which the present decree was issued — had been formally inaugurated by Pope Felix III’s excommunication of Acacius in 484, for the patriarch’s communion with the Monophysite parties (Peter Mongus of Alexandria and Peter the Fuller of Antioch, both named in the closing list immediately before Acacius) and his signing of the imperial Henoticon. Acacius died in 489 still under sentence; the schism would not be formally resolved until the Formula of Hormisdas in 519. By placing Acacius at the climax of the closing heresiarch list — alongside Simon Magus, Marcion, Arius, Macedonius, Nestorius, Eutyches, and Dioscorus — the decree makes a definitive ecclesiastical judgment: Acacius is not merely a wayward bishop subject to discipline but a heresiarch whose memory stands condemned for all time alongside the great heresiarchs of the Church. This is the formal Roman magisterial position throughout the Acacian Schism and remains the operative position the Formula of Hormisdas would later make universally binding on the Eastern Church as the condition of restored communion with Rome. The reader who has worked through Felix III’s correspondence, Simplicius’s earlier correspondence with Acacius, and Gelasius’s Tomus de anathematis vinculo will recognize the structural continuity: Acacius is condemned not for any individual disciplinary infraction but for his fundamental rupture with the Roman See and his communion with the condemned Monophysite parties.

The Decretum Gelasianum thus brings together in a single document the structural elements of the Roman magisterial tradition as it stood at the end of the patristic period: Sacred Scripture (the canonical books, including the deuterocanonical), the Petrine foundation of Roman primacy from the Lord’s evangelical voice, the indefectibility of the Roman See in faith, the three sees of Peter without place for Constantinople, the four ecumenical councils received by Roman reception, the patristic Fathers received with discrimination, the Tome of Leo as standard of doctrinal authority requiring reception even to a single iota, the apocrypha rejected, and the heresiarchs (including Acacius) condemned under the indissoluble bond of anathema. Each of these elements would be received, developed, and definitively articulated in subsequent Roman magisterial teaching — through the Formula of Hormisdas in 519, through the medieval Roman tradition, through Trent’s definitive articulation of the canon in 1546, and through Vatican I’s definition of papal primacy and infallibility in 1870. The decree before us shows that none of these doctrines is a later innovation; all of them are the explicit Roman magisterial position already in 494.

The Early Church and Peter's Primacy