Catholics used this to "prove" the papacy: You have never envied any one; you have taught others. Now I desire that those things may be confirmed [by your conduct], which in your instructions you enjoin [on others].
While I was with them in the world, I kept them in thy name: those that thou gavest me I have kept, and none of them is lost, but the son of perdition; that the scripture might be fulfilled.
A common objection is that Augustine's theology was influenced by Manicheanism and then Calvin was influenced by Augustine, thus getting Manichean ideas into the church.
Is this true? false?