MacDonald rejected the doctrine of penal substitutionary atonement as developed by John Calvin, which argues that Christ has taken the place of sinners and is punished by the wrath of God in their place, believing that in turn it raised serious questions about the character and nature of God. Instead, he taught that Christ had come to save people from their sins, and not from a Divine penalty for their sins: the problem was not the need to appease a wrathful God, but the disease of cosmic evil itself. MacDonald frequently described the atonement in terms similar to the Christus Victor theory. MacDonald posed the rhetorical question, "Did he not foil and slay evil by letting all the waves and billows of its horrid sea break upon him, go over him, and die without rebound—spend their rage, fall defeated, and cease? Verily, he made atonement!"