John the doctrine of penal substitutionary atonement is a doctrine long under attack by liberals and unbelievers here is some resources from Monergism that may help you out. http://www.monergism.com/directory/link_category/Atonement/Penal-Substitutionary-Atonement/


Peter

If you believe what you like in the gospels, and reject what you don't like, it is not the gospel you believe, but yourself. Augustine of Hippo