The Early Church and Peter's Primacy

Letter XIV, from Pope Leo to Anastasius, Bishop of Thessalonica

Synopsis: Leo writes to Anastasius, bishop of Thessalonica and his vicar for Illyricum, combining a sharp rebuke for Anastasius’s abuse of power against Atticus, metropolitan of Old Epirus, with a comprehensive restatement of the terms of the vicariate — covering the rights of metropolitans, the qualifications for ordination, the exclusion of subdeacons from carnal marriage, the requirement of popular consent for episcopal elections, the reporting of Epirus ordinations to Thessalonica, the frequency of provincial councils, the prohibition against bishops deserting their sees for greater ones, the rules against claiming another’s cleric, and the requirement that all disagreements with Anastasius be referred to Rome — closing with a declaration of the episcopal hierarchy as a cascade structure through which the care of the universal Church flows to Peter’s one see, from which nothing anywhere departs.

Leo, bishop of the city of Rome, to Anastasius, bishop of Thessalonica.

How great the things entrusted to your brotherhood by the authority of the most blessed Apostle Peter, and how many also committed to you by Our own favor — if you were truly to weigh these with right reason and just judgment, we could greatly rejoice in the devotion of the solicitude enjoined upon you.

Chapter I: The Delegation of Leo’s Place; The Care Owed to All Churches by Divine Institution; Rebuke for the Treatment of Atticus of Old Epirus

Just as my predecessors delegated to yours, so I too, following their prior example, have delegated to your beloved the governance of my place, that you might aid Our solicitude for all the Churches, which We owe principally by divine institution, imitating Our gentleness and extending in some measure the presence of Our visitation to the provinces far from Us. With timely foresight and prudent attention, you are to discern what you may settle through your own zeal and what must be reserved for Our judgment. In major and difficult matters you are at liberty to defer under Our sentence, with no occasion or reason to transgress your measure.

We have often urged you through Our written admonitions to temper all your actions, leading the churches entrusted to you toward wholesome obedience through the exhortation of charity — so that, though brothers who are negligent or idle may require greater authority, correction itself may preserve charity. The blessed Apostle Paul, instructing Timothy for ecclesiastical governance, says: Do not rebuke an older man but exhort him as a father, younger men as brothers, older women as mothers, younger women as sisters, with all purity (1 Tim. 5:1–2). If such moderation is owed by apostolic institution even to lesser members, how much more must it be shown to Our brother bishops without offense? Though some priests’ conduct may merit reproof, benevolence, exhortation, and charity should prevail over severity, coercion, or force. Yet those who seek their own things and not the things of Jesus Christ (not seeking my own advantage but that of many, Phil. 2:21) easily go astray, swelling with pride through ambition and turning what was given to serve harmony into an instrument of harm.

We speak this with no small sorrow, feeling in some measure answerable ourselves when you transgress so excessively the rules entrusted to you. If you cared little for your own reputation, you should at least have spared Ours — lest what your will did appear to have been done by Our judgment. Search Our letters and those of Our predecessors: you will find nothing We or they ordained that matches your presumption. Our brother Atticus, metropolitan of Old Epirus, came with the bishops of his province, lamenting with tears before your deacons the harsh treatment he had suffered. Your own letters, which his company delivered, stated that Atticus had come to Thessalonica and had there signed a profession of consent — the suggestion being that his presence demonstrated voluntary submission. But the very document exposed the injury: writing was unnecessary for one whose arrival already showed compliance. Your letter’s own words testified to his laments, uncovering what silence had concealed: you invoked the authority of the Illyrian prefecture, raising the supreme secular power against an innocent bishop — one against whom no charges, or only false ones, existed — dragging him from his Church’s sacred precincts by terrifying force, granting no respite for illness or the severity of winter, compelling him through perilous snows in which some of his companions reportedly perished.

I am greatly astonished and grieved, dearest brother, that you could act so harshly against one whose only offense was delay — and who cited bodily infirmity — especially when you ought to have awaited Our response to your consultation. You foresaw well enough what Our measured judgment would say in reply and hastened to act before it arrived, knowing We might not grant you the license you sought. Had some grave crime of the metropolitan come to light, was the guilt new? Your failure to name any charge confirms his innocence. Even if he had committed something grave, you should have awaited Our censure — acting only once you knew Our will. We entrusted Our authority to you to share Our solicitude, not to transfer the fullness of power. While your pious actions gladden Us, your excesses deeply sadden Us. After so many cases, We must more diligently guard against such conduct, removing the occasion of scandal from the Lord’s churches through charity and peace — your episcopal dignity undiminished but every usurpation cut back.

Chapter II: Metropolitan Rights Must Be Preserved Under the Vicariate

According to the canons of the holy Fathers, established by the Spirit of God and revered throughout the world, We decree that the metropolitans of each province entrusted to your care retain inviolate the rights of their ancient dignity — neither transgressing through negligence nor trespassing on another’s through presumption.

Chapter III: Who May and May Not Be Ordained Bishop

In cities where bishops have died, this form must be observed: the one to be ordained, even if of good repute, must not be a layman, a neophyte, one who has been married twice, or the husband of a widow — but one wholly irreproachable, since what constitutes no fault in other members of the Church is unlawful for a priest.

Chapter IV: Subdeacons Are Excluded from Carnal Marriage

While those outside the clergy may freely marry and beget children, subdeacons are denied carnal marriage so as to exhibit perfect continence — that those who have wives may live as though they had none, and those who have no wives remain single: those who have wives as though they had none (1 Cor. 7:29); and those who have none remain so. If this is fitting for the fourth rank, how much more for the first, second, and third? No one is fit for levitical, priestly, or episcopal dignity who has not curbed himself from the pleasure of marriage.

Chapter V: No One May Be Ordained Bishop Unwillingly

When choosing a chief priest, the one unanimously requested by the clergy and people is to be preferred. If their votes are divided, the metropolitan’s judgment should favor the candidate with greater zeal and merit — but no one may be ordained against those who are unwilling or have not requested him, lest the city despise or hate a bishop it did not choose, and become less devout than is fitting.

Chapter VI: The Metropolitan of Epirus Must Refer Ordinations to Anastasius

The metropolitan must report to your brotherhood concerning the bishop to be ordained and the consent of the clergy and people, informing you of the province’s agreement, so that your authority may confirm the ordination that has been rightly carried out. This should cause no delay or difficulty, so that the Lord’s flocks are not long deprived of their shepherd. When a metropolitan dies, the bishops of the province must assemble at the metropolitan city, consult the desires of both clergy and citizens, and choose the best from the priests or deacons of that church — reporting his name to you to fulfill the wishes of those seeking him, once you have approved the choice. We forbid any presumption without your knowledge, and require that just elections face no delay.

Chapter VII: Two Provincial Councils Annually; Unresolved Cases Referred to Rome

Regarding episcopal councils, We decree what the holy Fathers wisely ordained: two assemblies annually to adjudicate disputes among the various ranks of the Church. If more serious matters arise among the leaders, which cannot be settled within the province, the metropolitan must make them known to you with a full account of the case. If, with the parties present, your own judgment cannot resolve it, the matter must be referred to Our judgment.

Chapter VIII: A Bishop Who Abandons His See for a Greater One Loses Both

If a bishop, contemptuous of his city’s humbler station, seeks a greater see through ambition, he shall be removed from the see he coveted and lose his own — presiding neither over those he desired nor those he abandoned. Each must be content within his own limits and not seek to transgress his rights.

Chapter IX: No One May Claim Another’s Cleric Without Consent

No one may receive or solicit another bishop’s cleric without that bishop’s consent — except by mutual agreement in charity. Whoever dares to allure or retain a brother’s valuable cleric commits a grave injury. If the cleric is within the province, the metropolitan must compel his return to his own bishop; if further away, your authority’s precept will recall him — leaving no room for greed or ambition.

Chapter X: Bishops Summoned by the Metropolitan Must Respond Within Fifteen Days

We desire you to be most moderate in summoning bishops, so as not to appear to glory in their difficulty. If a significant matter requires a fraternal council, two bishops per province approved by the metropolitan suffice to attend you — and these must not delay beyond fifteen days from the time appointed for the assembly.

Chapter XI: Disagreements with Anastasius Come to Rome; The Care of the Universal Church Flows to Peter’s One See

If the opinions of the bishops differ from yours in matters to be settled, let everything be referred to Us with documented testimony, so that, resolving all ambiguities, We may decree what is pleasing to God. Our whole purpose is to preserve unity and discipline without dissension and without neglect. I exhort you, and those brothers who are offended by your excesses — though their complaints differ — that these pious and wholesome ordinances remain undisturbed. Let none seek his own things but the things of another, as the Apostle says: Let each look not only to his own interests but also to the interests of others (Phil. 2:4, 21); Let each please his neighbor for his good, to build him up (Rom. 15:2). The bond of unity will not hold unless charity binds us inseparably, since we, though many, are one body in Christ, and individually members one of another (Rom. 12:5; 1 Cor. 12:12).

The unity of the body produces one health and one beauty, and requires harmony above all — especially among priests. For though their dignity is common, their order is not: even among the most blessed apostles there was, in the likeness of their honor, a certain distinction of power; and though all were equal in their election, it was given to one to stand before the rest. From this source the distinctions among bishops were also ordered, so that not all might claim all things for themselves; but in each province there is one whose opinion stands first among the brethren; and in the greater cities some have been appointed to a wider solicitude — through whom the care of the universal Church flows together to Peter’s one see, and nothing anywhere departs from its head.

Whoever knows he presides over some must not resent another’s precedence, but render the obedience he himself requires of others — and not lay on those below him burdens too heavy to bear: they bind heavy burdens and lay them on men’s shoulders (Matt. 23:4). We are disciples of the humble and gentle Master, who says: Learn from me, for I am gentle and lowly in heart, and you will find rest for your souls; for my yoke is easy and my burden is light (Matt. 11:29–30). This We experience if We heed: Whoever would be great among you must be your servant, and whoever exalts himself will be humbled, and whoever humbles himself will be exalted (Matt. 20:26; Mark 10:43; Luke 22:26; Luke 14:11).

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Notes / Historical Commentary

Letter XIV is the longest and most theologically rich letter in the Illyrian series, and it may be the single most important letter in the Leo corpus for understanding how Leo articulates the structure of the episcopal hierarchy and the place of Peter’s see within it. Written on January 6, 446 — the same day as Letter XIII, and evidently as a companion to it — it is addressed directly to Anastasius of Thessalonica (modern Thessaloniki, northern Greece), Leo’s vicar for the provinces of Illyricum. The letter has two distinct movements: the first half is a sustained rebuke of Anastasius for his treatment of Atticus, metropolitan of Old Epirus; the second recodifies the terms of the vicariate across eleven chapters. The rebuke and the recodification are inseparable — Leo’s anger at Anastasius’s overreach is the occasion for restating precisely what Anastasius’s authority is and is not.

The opening of Chapter I states the terms of the delegation with exceptional precision. Leo uses the phrase vices mei moderamine delegavi — “I have delegated to you the governance of my place.” The word vices is the root of vicarius: Anastasius is Leo’s vicar, acting in Leo’s stead. But the delegation is expressly limited. Leo then adds that he has shared his solicitude so that Anastasius can aid the care “which We owe principally by divine institution to all the Churches” — bringing together two of the most significant terms in the Leo corpus: principaliter (governing/originating — the same adverb used of Peter’s primacy in Letter X) and ex divina institutione (by divine institution — the grounding already seen in Letter XII). What Anastasius has received is a loan of authority, not an independent grant: Leo makes this explicit in the rebuke, saying “We entrusted Our authority to you to share Our solicitude, not to transfer the fullness of power.” The fullness of power — plenitudo potestatis, though Leo does not use that technical term here — remains with Rome.

The Atticus episode, which occupies the second half of Chapter I, is significant not only as a pastoral rebuke but as a jurisdictional clarification. Old Epirus (roughly modern southern Albania and northwestern Greece) was a province within the Illyrian vicariate’s scope. The broader Illyrian region — covering the western Balkans, approximately the territory of modern Serbia, North Macedonia, Albania, and parts of Croatia and Bosnia — had been assigned by the Council of Constantinople (381) to the patriarchate of Constantinople, making Roman jurisdiction there a matter of ongoing tension between the two sees. By rebuking Anastasius for using the Illyrian civil prefecture’s coercive power against an Epirote bishop, Leo is simultaneously defending a bishop wrongfully treated and reasserting that the vicariate operates through episcopal persuasion and Roman authority — not through the secular arm. An abuse of the kind Anastasius committed threatened to discredit the entire Illyrian arrangement and hand Constantinople a grievance against Roman involvement in the region.

The closing of Chapter XI is where the letter achieves its greatest theological altitude. Having restated the disciplinary norms of the vicariate across chapters II through X, Leo closes with an account of the episcopal hierarchy as a cascade structure: in each province there is a metropolitan whose opinion stands first; in greater cities there are those appointed to a wider solicitude; and through all of them the care of the universal Church flows together to Peter’s one see, from which nothing anywhere departs. The Latin is per quos ad unam Petri sedem universalis Ecclesiae cura conflueret, et nihil usquam a suo capite dissideret — “through whom the care of the universal Church flows together to Peter’s one see, and nothing anywhere departs from its head.” The image is of water flowing from every corner of the world into a single sea: the entire episcopal structure, from the individual bishop to the metropolitan to the exarch to the patriarch, is described as a system whose ultimate terminus is Peter’s see. Rome is not one node in a network; it is the head from which nothing anywhere is separated.

The reader should also note Leo’s careful distinction between dignitas communis and ordo non generalis — the common dignity of all bishops and the non-general order among them. All bishops share the same dignity and character; episcopal consecration is the same sacrament regardless of see. But their rank and jurisdiction are ordered hierarchically — not by nature but by the divine provision that established the Petrine primacy. This allows Leo to maintain the full equality of the episcopal order while insisting on the structured subordination of that order’s exercise. It is a sophisticated position, and it is worth the reader’s attention that Leo states it not in a doctrinal treatise but in a practical letter of governance to his own vicar.

The Early Church and Peter's Primacy