God first knew it, and from all eternity. He promulgated the doctrine from the very beginning of the human race, and continuously by the prophets of the Old Testament; Christ taught it clearly as the Gospels prove, and confirmed His claim by miracles; the Apostles and the Catholic Church have promulgated the doctrine throughout the world.
Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty