Author Joel Rosenberg is promoting his book by lamenting recent news of cannibalism, mommy porn, and gay marriage. He says that what we need is another Great Awakening. While he only mentions the first two, Rosenberg describes these movements as, “massive, widespread, game-changing eras of spiritual revival in which millions of people became deeply devout and passionately evangelistic followers of Jesus Christ. In 1770, for example, there were fewer than two dozen Methodist churches in America. By 1860, there were nearly 20,000. In roughly the same time frame, the number of Baptists went from under 200,000 to more than...