John Chrysostom

I say nothing of what has gone before, that ye have outraged Him, Him that had done you no wrong, Him that had done you good, that He exacted not justice, that He is first to beseech, though first outraged; let none of these things be set down at present. Ought ye not in justice to be reconciled for this one thing only that He hath done to you now? And what hath He done? …

Homily 11 on 2 Corinthians ↗

Gregory of Nazianzus

But look at it in this manner: that as for my sake He was called a curse, Who destroyed my curse; and sin, who taketh away the sin of the world; and became a new Adam to take the place of the old, just so He makes my disobedience His own as Head of the whole body. As long then as I am disobedient and rebellious, both by denial of God and by my passions, so long Christ also is called disobedient on my account. …

Theological Oration 5 ↗

Theophylact of Ohrid

I, he says, do not recall everything—that you dishonored the Benefactor, that He did not concern Himself with vengeance, that on the contrary He Himself was the first to desire reconciliation: is not what He has now done sufficient for you to be reconciled with Him? What then did He do? He delivered to death for our sake His own Son, "who knew no sin," that is, the One who is righteousness itself, as though He were a sinner and evildoer, for "cursed before God is everyone who hangs on a tree" (Deut. …

Commentary on 2 Corinthians ↗

Ambrose of Milan

But if you hold to the letter, as you think, from what is written, that the Word was made flesh, that the Word of God was made flesh; do you deny that it is written about the Lord, that he did not commit sin, but became sin? Therefore, the Lord was not turned into sin? Not so; but because he took on our sins, he was called sin. For the Lord was also called cursed, not because the Lord was turned into a curse, but because he himself took on our curse: Cursed is he who hangs on a tree. …

On the Sacrament of the Incarnation of the Lord, Chapter 6 ↗

Thomas Aquinas

Where we get the faculty to reconcile to God is indicated by the fact that he gave us the power to live justly and abstain from sins. By doing this we are reconciled to God. Hence he says, for our sake, he made him to be sin who knew no sin. As if to say: you can be reconciled to God, because he, namely, Christ, who knew no sin: "He committed no sin; no guile was found on his lips" (1 Pet. 2:22); "Which of you convicts me of sin?" (Jn. 8:46). For our sake, he made him to be sin. This can be explained in three ways. …

Commentary on 2 Corinthians ↗