Introduction to 2 Corinthians 5:21
Martin Luther called this 'the sweet exchange.' In one sentence Paul explains the deepest mystery of the cross: the sinless One became sin so sinners could become righteous. Nothing in the universe rivals the weight of this transaction. Christ took what was ours — guilt, sin, death — and gave us what was His — perfect righteousness before God.
Historical and Cultural Context
Paul writes to the Corinthians around AD 56 as he defends his apostolic ministry of reconciliation (vv. 18-20). The verse climaxes his appeal: 'be ye reconciled to God,' and v. 21 explains the ground on which reconciliation is even possible. Corinthian believers, surrounded by a culture of patronage and merit, needed to know that God's acceptance of them rested on Christ's perfect record, not their fluctuating performance.
Original Language Insights
'Made him to be sin' (hamartian epoiesen) — Paul does not say 'a sinner' or 'a sin-bearer,' but bluntly, 'sin.' Christ was treated as sin itself before the Father. 'Who knew no sin' (ton me gnonta hamartian) — Christ had no personal experience of sin; He was the only truly innocent human. 'Might be made the righteousness of God' (genometha dikaiosune theou) — not just made righteous, but become 'the righteousness of God' itself, a status of perfect standing belonging to God. 'In him' (en auto) — the union with Christ is the location where the exchange holds.
Theological Significance
This is imputation in its purest form. Our sin was reckoned to Christ's account at the cross; His righteousness is reckoned to ours at the moment of faith. Notice the symmetry: Christ did not become sinful intrinsically, and we do not become righteous intrinsically — both are positional realities established by divine accounting. This protects the gospel from two errors: thinking Christ became corrupt, or thinking believers become sinless. The exchange is real but legal — and that legal reality is the foundation of every other blessing in the Christian life.
Practical Application for Today
When you feel unworthy to approach God, remember that your worthiness is not your own. You wear the righteousness of Christ. When you sin, run TO the cross, not from it — the exchange remains valid. When the enemy accuses, point him to v. 21: every sin he names was placed on Christ; every righteousness God demands is yours in Him. This verse is also the engine of holiness — having been made the righteousness of God, you live OUT what you have been made IN Christ.