Both those have been explained via the Bible; those who know the Bible and have been following along know this. Therefore there is a choice: Remain ignorant or note that while both sides may follow the Bible, they both give heavier emphasis to one portion of the Bible over the other. Remember, too, Catholics follow both oral and written traditions--oral, because it came first, written because it contains Gospels and letters, all of which were written after Christ's death, and many written after the deaths of some of the Apostles, but are early Church Fathers who learned from the Apostles and passed on what they had been told/taught.