Penal Substitution is a theological viewpoint within Christianity that maintains Jesus was legally punished in place of the sinners. That is, He took the place of the sinner. It is "penal" in that Christ suffered the penalty of the Law, taking the "penalty" of the Law. It was substitutionary in that Christ took our place on the cross when He bore our sins (1 Pet. 2:24) and became sin on our behalf (2 Cor. 5:21).