catholic vs protestant

Does anybody know how the early Catholic Church (say 500AD and earlier) compares with the modern Catholic Church and with the Protestant reformation? For example the prayers to the saints, papal infallibility, infant baptism, purgatory, priests forgiving sins, Mary being sinless etc-were these...

Again, this is NOT a debate, this is a poll, I want to know which Catholic doctrine Protestants and other non-catholics have difficulty with the most. I've already decided what my next topic for a debate with Protestants will be, but I'm not going to be doing it for a very long time. Maybe if...

It appears that some Protestants are attacking the OBOB Forum (I think it has something to do with something happening in the Denomination-Specific Theology sub-forum, since I've seen these same threads on that sub-forum) I'd like to point all Protestants who want to debate Catholic Doctrine...

Hello, I'm a Catholic (As my username implies) and I thought like to discuss my biggest issue with Protestantism, it's the phrase "Jesus suffered and died on the cross so that we don't have to suffer." But Our Lord said: "If any man will come after me, let him deny himself, and take up his...