2 Corinthians 5:18 – 21
New International Version (NIV)
18 All this is from God, who reconciled us to himself through Christ and gave us the ministry of reconciliation: 19 that God was reconciling the world to himself in Christ, not counting people’s sins against them. And he has committed to us the message of reconciliation. 20 We are therefore Christ’s ambassadors, as though God were making his appeal through us. We implore you on Christ’s behalf: Be reconciled to God. 21 God made him who had no sin to be sin for us, so that in him we might become the righteousness of God.
From BibleGateway.com: http://www.biblegateway.com/passage/?search=2+corinthians+5.18-21&version=NIV