Letter 124: Leo, the bishop, to the whole body of monks settled throughout Palestine. The anxious care, which I owe to the whole Church and to all its sons, has ascertained from many sources that some offense has been given to your minds, beloved, through my interpreters , who being either ignorant, as it appears, or malicious, have made you take some of my...

Pope Leo the GreatEudocia Augusta|c. 455 AD|leo great
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Barbarian peoples/invasions; Theological controversy; Church council

Leo, Bishop of Rome, to the whole body of monks settled throughout Palestine.

I. They may have been misled by a faulty translation of his letter on the Incarnation

The anxious care that I owe to the whole Church and to all her children has made me aware, through many sources, that some offense has been given to your minds, beloved, through my interpreters. Whether through ignorance or malice on their part, they have caused you to understand some of my statements in a sense different from what I intended. They proved incapable of rendering Latin into Greek with proper accuracy -- and indeed, even in one's own language, the explanation of subtle and difficult matters can scarcely satisfy the writer himself, let alone others.

Yet this misunderstanding has in one respect worked to my advantage: by your rejection of what the Catholic faith rejects, I know that you are friends of truth rather than of falsehood, and that you rightly refuse to accept what I myself also reject in accordance with ancient doctrine.

For my letter addressed to Bishop Flavian of holy memory is sufficiently clear in itself and requires neither correction nor clarification. My other writings are in full harmony with that letter, and my position will be found consistently stated throughout them. But since necessity has compelled me to argue against the heretics who have thrown so many of Christ's people into confusion, let me address the specific points of concern.

II. The Catholic faith on the Incarnation restated

I affirm, and have always affirmed, that our Lord Jesus Christ, the only-begotten Son of God, is truly God and truly man: perfect in His divinity and perfect in His humanity, consubstantial with the Father in His divine nature and consubstantial with us in His human nature, born of the Virgin Mary as to His manhood.

I have never denied the reality of Christ's human flesh. I have never suggested that His body was of a different substance from ours. I have never taught that the two natures were confused or mingled into a third thing that is neither God nor man. What I have taught -- and what the universal Church confesses -- is that in the one Person of Christ, two natures are united without confusion, without conversion, without division, and without separation.

If my words were rendered into Greek in a way that obscured this teaching, the fault lies with the translators, not with the teaching itself. Let anyone who doubts my orthodoxy examine the letter to Flavian in full, read alongside the definitions of the Council of Nicaea and the letters of Cyril of Alexandria of blessed memory. There is no discrepancy among them, for the faith is one.

III. He urges them to embrace the Council of Chalcedon

Do not be disturbed, beloved, by those who claim that the Council of Chalcedon introduced novelties. It did no such thing. The Council confirmed the ancient faith against a new heresy. It restated what Nicaea established. It vindicated what the Apostles taught. The definition it produced is the same faith in which you were baptized and in which you have lived.

Those who oppose the Council are, whether they know it or not, allying themselves with the very heresy the Council condemned. For to reject the Council's definition is to leave the door open to Eutyches, who denied the reality of Christ's human nature, and this denial strikes at the very heart of the Gospel. If Christ did not truly become man, then He did not truly suffer, did not truly die, and did not truly rise again -- and our faith is empty.

We therefore urge you, with all the authority of the Apostolic See and with all the affection of a father: embrace the Council of Chalcedon, hold fast to the faith it defined, and reject the false teachers who seek to lead you astray. The truth that was proclaimed at Chalcedon is the truth of Peter, and Peter's truth is Christ's truth. Stand firm in it, and you will not be shaken.

Dated from Rome.

Modern English rendering for readability. See the 19th-century translation or original Latin/Greek for scholarly use.

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