Letter 26: Nothing, as you know, most beloved of God, is more precious to priests than piety and the right dividing of the word of truth. For all our hope and safety, and the recompense of promised good depend thereon. For this reason we must take all pains about the true Faith, and those things which have been set forth and decreed by the holy Fathers, th...

Pope Leo the GreatUnknown|c. 443 AD|leo great
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Theological controversy; Imperial politics; Church council

A second letter from Flavian to Leo.

I. The heresy of Eutyches restated

To the most holy and blessed father and fellow minister Leo: Flavian sends greetings in the Lord.

Nothing, as you know, most beloved of God, is more precious to priests than piety and the right handling of the word of truth. For all our hope and salvation, and the recompense of promised blessings, depend upon it. For this reason we must take every care to preserve the true faith and the definitions set down by the holy Fathers, so that at all times and in all circumstances they may be kept and guarded whole and unimpaired.

It was therefore necessary on this occasion for us -- seeing the orthodox faith under assault and the heresy of Apollinaris and Valentinus being revived by the wicked monk Eutyches -- not to look the other way, but to expose the danger publicly for the safety of the people. For this man, Eutyches, keeping his diseased and corrupted opinion hidden within himself, has dared to attack our authority and has shamelessly sought to implant his own blasphemy in the minds of many. He declares that before the Incarnation our Savior Jesus Christ had two natures -- Godhead and manhood -- but that after the union they became one nature. He does not know what he is saying or what he so boldly affirms. For the union of the two natures that came together in Christ did not, as Your Holiness well knows, confuse their properties in the process; the properties of both natures remain intact even in the union. He added a further blasphemy as well, saying that the Lord's body, born of Mary, was not of our substance or of human matter. Though he calls it human, he refuses to say it was consubstantial with us or with her who bore him according to the flesh.

II. The means Eutyches has taken to circumvent the synod

Yet the acts of Ephesus, in the letter written by the holy and ecumenical synod to the deposed Nestorius, contain these express words: "The natures which came together to form true unity are indeed different; and yet from them both there is but one Christ and Son. Not as if the difference between the two natures was done away with through the union, but rather these same natures -- His Godhead and His Manhood -- perfected for us one Lord Jesus Christ, through an ineffable and incomprehensible meeting which resulted in unity."

This passage is well known to Your Holiness. Yet Eutyches attaches no weight to these words and imagines he is not subject to the penalties established by that holy and ecumenical synod.

For this reason, having found that many of the simple-minded were being harmed in their faith by his assertions, and after he was accused by the devout Bishop Eusebius and appeared before the holy council, where he declared with his own mouth what he believed to the assembled bishops, we deposed him for his departure from the true faith. Your Holiness will learn the details from the minutes, which we have sent to you. Since the matter requires both greater authority and a wider audience for the security of the faith, we ask that Your Holiness make known your judgment by letter to us and to the most devout and God-loving emperor, so that the true doctrine, firmly established, may suffer no further disturbance.

We have committed this letter to the care of the most beloved deacon Basil.

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

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