The Early Church and Peter's Primacy

Letter CXXXVI, from Pope Leo to Emperor Marcian

Synopsis: Leo thanks Marcian for pressing the Anatolius matter to its resolution, reports that he has responded to Anatolius’s letters as he was obligated to do, notes that Anatolius’s epistles attribute the canonical fault to others rather than to himself, charges Anatolius through Marcian to guard the Nicene canons and use Marcian’s authority diligently, formally takes Anatolius’s charity back into his heart while commending Julian of Cos as Anatolius’s standing companion, and asks Marcian to suppress the monk Carosus who is overturning many hearts at Constantinople.

Leo, bishop, to Marcian Augustus.

Chapter I: Leo Thanks Marcian; Reports That He Has Responded to Anatolius; Notes That Anatolius Attributes the Fault to Others

The manifold grace of your clemency’s letters has been received by me with due reverence, and I gladly acknowledge how pious a care for the Christian religion — as is your custom — you maintain: since you wish to establish among the Lord’s priests that concord which is suited both to the universal Church and to divine worship. For that is the probable peace and the true charity which the blessed apostle most fully preaches, saying: Charity from a pure heart and a good conscience and unfeigned faith (1 Tim. 1:5). Compliant therefore and gladly consenting to the holy exhortations of your piety, I have responded, as I was obligated, with a reciprocal letter to the writings of my brother and fellow bishop Anatolius — who should have attributed the interruption of my correspondence to his own silence: since when I had admonished him with fraternal charity to withdraw from a reprehensible ambition, he neglected to reply further. As for me, who kept silence toward him, I did not cease for my own part to suggest to your clemency what would be profitable for the peace of the universal Church. For your mildness received my suggestions so readily that you deigned always to reply, and acted in such a way that what has now been corrected is owed to your glory — though his letters now sent are such as to attribute the notable fault of ambition to others rather than to claim it as his own.

Chapter II: Leo Charges Anatolius Through Marcian to Guard the Nicene Canons and Use Marcian’s Authority Against Hidden Heresies

Let the aforesaid bishop recognize, most venerable Augustus, how much more he grows by humility than by self-exaltation — and, mindful of the limits the Fathers established, let him guard with the observance he owes, for the future, the wholesome canons established for the peace of the universal Church; let him be unremittingly vigilant for the defense of the Catholic faith; let him maintain diligent watch for the custody of the Lord’s flock; let him avail himself in all things of the most devoted aid of your piety — and whatever hostile deceits lie hidden anywhere under the name of Catholic, let him actively bring them to light for the glory of your highness. For you who have driven sacrilegious error from the most distant provinces and recalled the darkened hearts of the Palestinians to the light of truth — how will you permit it to breathe under the rays of your faith? We believe that even through Egypt, with God aiding you in all things, all the remnants of corrupt doctrine will more swiftly be extinguished. You deal generously with those from whom you remove the license of execrable error.

Chapter III: Leo Takes Anatolius’s Charity Back Into His Heart; Commends Julian as Anatolius’s Companion in the Faith

I rejoice therefore, most glorious one, that what had been thrown into disorder has been set right: that the memory of the blessed Flavian is honored for the consolation of his disciples, that Andrew is removed from the archdeacon’s ministry, that injury to the holy Fathers is restrained and violation of the canons desisted from — so that your kingdom, with Christ reigning, may be tranquil, and with Christ defending it, strong. In full compliance with your clemency in all things, I take my brother Anatolius’s charity to my whole heart. Let him show himself lovable and faithful — and from the charity I now pledge him, let him separate himself by no future inconsistency — joining to himself in sincere affection those whom we have proven to be defenders of the Catholic faith. In all things he has the example of your piety to follow, especially with the aid of your benevolence to sustain him. I ask that you hear the suggestions of my brother and fellow bishop Julian, whom I commend to your piety, as graciously as you are accustomed to do. This will also profit my brother Anatolius — if you hold in due honor the one whom I have willed to be present there for the Catholic faith.

Chapter IV: Leo Asks Marcian to Suppress the Monk Carosus Who Is Overturning Hearts at Constantinople

There is also a matter most salutary for the Constantinopolitan Church: I ask that the monk Carosus — excessively ignorant and excessively perverse — who has, as I have learned, overturned the hearts of many, may by the grace of your piety spread his poisons no further: lest where, through the holy zeal of your mildness, nearly every effort of the heretics has been extinguished, there through a vile and reprobate defender of condemned perfidy both the glory of your faith and the authority of the synod be violated.

Dated the fourth day before the Kalends of June, in the consulship of the most illustrious Aetius and Studius.

Source/Reference

Notes / Historical Commentary

Letter CXXXVI is the companion letter to CXXXV — sent to Marcian on the same day, reporting the restoration of communion with Anatolius while extending the practical agenda into the new phase. It is structured in four movements: the acknowledgment of Marcian’s role in producing the resolution, the charge to Anatolius delivered through Marcian, the formal reception of Anatolius back into Leo’s charity with Julian commended as companion, and the new directive about the monk Carosus. The four movements show Leo managing simultaneously the retrospective (the Anatolius case formally closed), the prospective (Anatolius’s future conduct), the relational (Julian’s standing), and the operational (Carosus’s suppression).

Chapter I’s observation about Anatolius’s letters deserves attention. Leo tells Marcian plainly that Anatolius’s epistles attribute the notable fault to others rather than to himself. This is not an angry accusation — the case is being closed — but it is a candid historical note. The emperor who had served as the instrument of pressure throughout the eighteen-month arc now receives from Leo an accurate account of what the compliance actually looked like: the directives carried out, the fault deflected. Marcian is being kept accurately informed, which is itself a form of continued oversight.

Chapter IV’s request about Carosus is the letter’s most practically significant element for the primacy question. Leo is asking Marcian to suppress a specific individual at Constantinople for the health of the Constantinopolitan Church — lest the synodal authority be violated by “a vile and reprobate defender of condemned perfidy.” The pattern is identical to the Aetius/Andrew case: Leo identifies the problem, names the individual, asks the emperor to act. The Apostolic See’s solicitude for the Constantinopolitan Church’s health does not end with the restoration of Anatolius to communion; it continues through the identification and suppression of whatever threatens it. This is ordinary and immediate pastoral jurisdiction operating through the available instrument of imperial authority.

The Early Church and Peter's Primacy