The principal work of Jesus on the cross was atoning for the sins of His people by standing in their place and bearing the consequences and judgment of their sins. Jesus was constituted a sinner—though without any sin of His own—by the imputation of the sins of God’s people to His own person so that He might bear that sin in His body on the tree and receive the just punishment for those sins.
During the first decade of the twenty-first century, a number of prominent leaders in the emerging church movement asserted that the doctrine of substitutionary atonement is tantamount to “cosmic child abuse.” At a time when men and women were finally starting to see the need to condemn every form of abuse that had been tolerated in our culture, the allegation seemed to be a powerful argument with which to drive people away from the longstanding teaching of the Christian church on the sufferings of Christ. The question of the atonement is not, however, settled by aspersions cast by contemporary theologians but by biblical exegesis and theological coherence.
While Jesus frequently taught His disciples about the certainty and necessity of His death on the cross (Matt. 16:21; Mark 8:31; Luke 9:22; 17:25; 22:22), He only explicitly tied those aspects of His death on the cross to its meaning on three occasions—in Mark 10:45, in the Good Shepherd discourse (John 10), and at the institution of the Lord’s Supper (Luke 22:19–20). In these places, Jesus taught the substitutionary nature of His death for the forgiveness of the sins of His people.
When we move from the Gospels to the Epistles, an explicit articulation of the substitutionary nature of the death of Christ appears. When one considers the many instances in which the Apostles explain the death of Christ, it is incontrovertible that the doctrine of substitutionary atonement is the Apostolic doctrine of the atonement. In what is perhaps the clearest exposition of the death of Christ, the Apostle Paul teaches the vicarious sacrifice of the Savior when he declares, “For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God” (2 Cor. 5:21). Likewise, the Apostle Peter explained that Jesus “himself bore our sins in his body on the tree, that we might die to sin and live to righteousness” (1 Peter 2:24).
Behind the Apostolic interpretation of the death of the Savior is the Old Testament teaching on the atonement. The prophet Isaiah, in speaking of the Suffering Servant, foretold of the sufferings that Jesus would undergo in the place of His people: “He was pierced for our transgressions; he was crushed for our iniquities; upon him was the chastisement that brought us peace, and with his wounds we are healed” (Isa. 53:5). All of Israel’s prophets alluded to the substitutionary nature of the work of the Redeemer when they spoke of the work of redemption. This, of course, also has its foundation in the nature of Old Testament sacrifice.
In his Reformed Dogmatics, Herman Bavinck explains the significance of the old covenant sacrificial system for seeking to understand the sacrifice of Christ: