Protestants believe in the Bible as the sole rule of faith for Christians. Using the Bible alone, John shows that this doctrine of Sola Scriptura is not scriptural; in fact, John shows why it is actually opposed to what is taught in Scripture. John also talks about where we got the Bible and responds to several myths commonly taught among non-Catholics about the Catholic Church and the Bible. He also clears up the question about the Catholic Church "adding" seven books to the Bible.