Skeptics commonly criticize core Christian beliefs by claiming that they were not really held by the earliest Christians. Instead, we are told, these beliefs were invented post facto by the institutional church.
The classic example of such an argument has to do with the divinity of Jesus. The earliest followers of Jesus didn’t really believe that Jesus was divine, this argument goes; it was only the later institutional church, under political pressure from Emperor Constantine, that insisted Jesus must have divine status. Thus, some argue, the belief that Jesus is God is not really, well, Christian.
This same sort of argument has also been applied to other doctrines, particularly the substitutionary nature of the atonement. Critical scholars, led by the classic work of Gustaf Aulén, have long argued that the earliest Christians did not believe that Christ died as a substitute for sinners. Instead, they say, these Christians believed what is known as the “Christus victor” view of the atonement—the idea that Jesus’s death on the cross (and resurrection) conquered the Devil and other forces that held people in bondage. On this view, Christ did not die in place of rebellious sinners but instead rescued victims from a fallen world.
If Aulén is correct, then when did the substitutionary view of the atonement arise? Peter Carnley embodies the typical critical approach when he says that the substitutionary view “was not known before Anselm’s time.” Thus, Carnley claims, it was not until the Middle Ages, when Anselm wrote Cur Deus Homo (Why the God-Man?), that Christians began to believe Christ died in place of sinners.
No doubt these sorts of scholarly arguments can explain why alternative theories of the atonement have gained popularity in recent years, while the substitutionary view continues to be vilified as un-Christian. Rob Bell does precisely this in his book Love Wins, where he roundly rejects the substitutionary view in favor of other options.
But is it really true that the substitutionary view of the atonement was not found before the Middle Ages? Not at all. Such a claim can be readily refuted merely by examining the writings of the New Testament itself—particularly the letters of Paul. However, it is also worth noting that key elements of the substitutionary view were held by some of the earliest Christian writers. One example is the author of the Epistle to Diognetus from the early second century. The Epistle to Diognetus was written by an unknown Greek author as an apology for Christianity. Below are some excerpts from the author that affirm key aspects of substitutionary atonement,
Seriousness of Sin
The author writes:
And when we had demonstrated that we were powerless to enter the kingdom of God on our own, were were enabled by the power of God. For our unrighteous way of life came to fruition and it became perfectly clear that it could expect only punishment and death as its ultimate reward. (9.1-2)
Here is a clear affirmation of human inability to save ourselves (akin to total depravity), and a full acknowledgement that sin deserves the ultimate penalty of death.
Grace and Love of God
God demonstrated his love for sinners through his atoning death. The author writes:
But then, when the time arrived that God planned to reveal at last his goodness and power (Oh the supreme beneficence and love of God!), he did not hate us, destroy us, or hold a grudge against us. (9.2)
God’s response to our sin, though deserving of death, is not to bring judgment but to show mercy. Notice that the author is amazed by God’s mercy. The author recognizes that God’s natural response, due to his holiness, would be to destroy sinful people.