How much is Sarah Palin's new book tailored to evangelical Christian readers? Her writing partner for Going Rogue, Lynn Vincent, is a longtime editor at World magazine, which practices "biblical worldview journalism." Though the book is published by an imprint of HarperCollins, it is being distributed to Christian booksellers by Zondervan, the world's leading publisher of Bibles. And Going Rogue brims with testimony about Palin's Christian faith. Its opening pages relate how Palin's daughter Piper literally became the poster child for the antiabortion group Alaska Right to Life by posing for a picture with "pretend angel wings fastened to her...