Chances are very good that within five years someone close to you will have become a "Mormon," a member of the Church of Jesus Christ of Latter-day Saints, which adds a million converts every three years. An audacious claim? Try this one: Members of the Church will tell you exactly what God looks like, where he lives, what he wears. They can even describe his voice. Furthermore, they can tell you where you came from, why you're here on earth, and...