@NEETzsche @caekislove You either take it as an axiom that the Holy Spirit preserved his faith through the Church, as Christ promised Peter he would, or you don’t.

There’s no point in arguing that with someone unless they accept the indefectibility of Scripture. Or rather, I’m not smart enough to do it. I’m sure the late medieval scholastics made a case for it when responding to Muslims, but it would be such a long argument that it would be useless for most people.