MacDonald rejected the doctrine of penal Substitutionary atonement as put forward by John Calvin which argues that Christ has taken the place of sinners and is punished by 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.