2 Corinthians 5:21

The context

Second Corinthians 5 belongs to the long defense of Paul's ministry that runs through chapters 2 to 7, written to a congregation whose relationship with him had been badly strained. The immediate unit is 5:18-21, where Paul describes God reconciling the world to himself in Christ and then appeals for the Corinthians to be reconciled. Verse 21 is the ground of that appeal.

It arrives without argument, and its brevity is part of the difficulty: the sentence does more work than it explains.

The words

The sentence turns on a deliberate shock. God made (epoiēsen) the one who knew no sin to be sin (hamartia) for the sake of the guilty. Paul does not write "sinner," and the word for innocence and the word for what he is made stand in one sentence, unmediated.

Some hear a sacrificial background: the Greek Old Testament sometimes uses hamartia for the Hebrew term for a sin offering. The sentence itself contains no offering vocabulary, so the allusion is argued, not stated.

The second half uses dikaiosynē, "righteousness," in the phrase "the righteousness of God," which also carries the weight of Romans 3:21-26. The purpose clause says those in him might become (genōmetha) the righteousness of God — a change of condition, not a label applied from outside.

What this passage establishes

That reconciliation is God's initiative and rests on an exchange: the one without sin is identified with sin, and those united to him receive a standing described as God's own righteousness. The cross is where sin is dealt with, and the sentence grounds that in God's action rather than human response.

What it does not establish

It does not state a theory of atonement. There is no courtroom here, no payment, no ransom. Penal substitution is one way of construing the exchange, and defensible, but it is a later systematization that borrows vocabulary from elsewhere in Paul.

It does not say Christ became a sinner. The clause "who knew no sin" sits in the same sentence to block that reading. What "made sin" means — identification, a sin offering, the bearing of a curse — is disputed, and the verse does not adjudicate.

It does not settle what "the righteousness of God" means. The genitive can be read as God's attribute, God's saving act, or the status given to believers. Each has serious defenders, and this verse alone does not decide.

How the church has read it

Augustine took "made sin" to mean made a sacrifice for sin. Luther and Calvin read the verse as the great exchange, Luther speaking of a wondrous exchange. Modern interpreters divide over the sacrificial background and the genitive, and no single reading can claim the field.

First pass, written October 2026. Corrections welcome.

Cited in these answers

• The PERSON of Jesus Christ
• What is Salvation?
• If God is love, why would He send anyone to hell?
• How could Jesus have been GENUINELY tempted if He could not sin?!
• How exactly does the death of Jesus secure salvation for anyone when the deaths of countless others matter not a bit in this regard?
• The Bible says that God’s eyes are too pure to look upon sin. So then how can the Holy Spirit be present at all times with people (even believers, who still commit sins)?

Part of Scripture, Opened — the exegetical layer behind every citation on this site. Scripture quotations are from the ESV.