Their Actions Betray Their Words

I was listening to a replay of last Friday's Catholic Answers, and a real interesting observation was made regarding the common Protestant (i.e., Evangelical/Fundamentalist) belief that the Bible is the sole and final authority of the Christian faith: If Protestants really believed this, then there wouldn't be 30,000+ non-Catholic Christian denominations. (Yes, a "non-denominational church" is a denomination).