"He himself bore our sins in his body on the tree, so that we might die to sins and live for righteousness" (1 Peter 2:24).
If Christ took our place, bore our sin, paid our penalty, and died our death, and in consequence, we have been forgiven, does this not mean (as some people ask) that we can now behave as we like and go on sinning? Paul's critics certainly developed this slander, and Peter's may have done too. But both apostles vigorously denied the charge. See how Peter continued: he bore our sins in order that we might die to sin, and live for righteousness. So the purpose of the death of Christ is not just to secure our forgiveness but to secure our holiness as well. -- John Stott