Letter 29: He notifies the appointment of his representatives at the Council of Ephesus To Cæsar Theodosius, the most religious and devout Augustus Leo pope of the CatholicChurch of the city of Rome. How much God's providence vouchsafes to consult for the interests of men is shown by your merciful care which, incited by God's Spirit, is unwilling that ther...

Pope Leo the GreatEmperor Theodosius I|c. 443 AD|leo great
christologyimperial politicsmonasticism
Imperial politics; Church council; Travel & mobility

He notifies the appointment of his representatives at the Council of Ephesus.

To Emperor Theodosius [Theodosius II], the most devout Augustus — Leo, pope of the Catholic Church of the city of Rome.

How greatly God's providence watches over the interests of humanity is shown by your merciful care, which — moved by God's Spirit — is determined to prevent any disturbance or division, since the Faith, being absolutely one, cannot differ from itself in any respect. Therefore, although Eutyches [a monk and abbot in Constantinople who taught that Christ had only one nature after the incarnation — a position later condemned as the heresy of Eutychianism], as the official records of the bishops' proceedings reveal, has been caught in an ignorant and misguided error and should have abandoned his rightly condemned position, your piety — which loves the Catholic Truth with great zeal for God's honor — has called for a synodal judgment at Ephesus [the Second Council of Ephesus, 449], so that the truth to which he is blind may be made plain to this ignorant old man. I have sent my brothers Julius the Bishop, Renatus the presbyter, and my son Hilary the deacon to act as my representatives as the situation requires. They will bring with them a spirit of both justice and compassion, so that while the entire misguided error is condemned (for there can be no doubt about what constitutes the integrity of the Christian Faith), if the one who has gone astray repents and begs for pardon, he may receive the mercy of priestly forgiveness. In the appeal he sent us, he reserved the right to earn our forgiveness by promising to correct whatever our judgment disapproved of in his views. But what the Catholic Church universally believes and teaches about the mystery of the Lord's Incarnation is set out more fully in the letter I have sent to my brother and fellow bishop Flavian [Leo's famous "Tome," which would become the definitive statement on Christ's two natures at the Council of Chalcedon in 451]. Dated June 13 in the consulship of the illustrious Asturius and Protogenes (449).

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

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