When Dave Armstong was an Evangelical, he professed and preached this notion that the Bible is the only infallible, authoritative source of Christian faith and practice. Today, as a Catholic convert and apologist, he knows that disproving sola scriptura and answering the question of authority–of where we can be assured of finding authentic Christian truth–is the indispensable key to explaining and defending the Catholic faith. In this book, Armstrong uses the Bible and basic common sense to dismantle sola scriptura piece by piece. With clear and forceful proofs, numbered and organized for easy use, he reveals it to be a biblically bankrupt concept, unable to withstand scriptural, logical, or historical scrutiny. Paper.