Consider Christ. ‘The death he died he died to sin, once for all’ (Rom. 6: 1 0). What does this mean? It can mean only one thing; that Christ died to sin in the sense that he bore sin’s penalty. He died for our sins, bearing them in his own innocent and sacred person. He took upon himself our sins and their just reward. The death that Jesus died was the wages of sin – our sin. He met its claim, he paid its penalty, he accepted its reward, and he did it ‘once’, once and for all. As a result sin has no more claim or demand on him. So he was raised from the dead to prove the satisfactoriness of his sin-bearing, and he now lives for ever to God. If this is the sense in which Christ died to sin, it is equally the sense in which we, by union with Christ, have died to sin. We have died to sin in the sense that in Christ we have borne its penalty. Consequently our old life has finished; a new life has begun.
– John R.W. Stott