Scripture, our Evangelical friends tell us, is the inerrant Word of God. Quite right, the Catholic replies; but how do you know this to be true? It's not an easy question for Protestants, because, having jettisoned Tradition and the Church, they have no objective authority for the claims they make for Scripture. There is no list of canonical books anywhere in the Bible, nor does any book (with the exception of St. John's Apocalypse) claim to be inspired. So, how does a "Bible Christian" know the Bible is the Word of God? If he wants to avoid a train of...