Why protestants are heretics....Why the catholic Church is the church Christ left.
Matthew 16:18 I tell you that you are Peter, and it is on this rock that I will build my congregation, and the powers of hell will not conquer it.
From the resurrection of Christ there had to be a Church continuing the original church. The Only Church that claims and has enough history in being that old Is the Catholic Church. Yea, the gates of hell haven't prevailed.