Churches across the West are twisting themselves into shapes no apostle would recognize — bending like pretzels to please secular society. They update doctrines, rewrite homilies, and water down long-held beliefs, all in hopes of attracting people who rarely show up anyway. And now the Church of England has chosen its new leader: Dame Sarah Mullally, hailed as a “theological liberal” and celebrated for her progressive stances. But it raises a fair question: does the Archbishop believe in the Christianity she is meant to lead, or only in a softened imitation of it? Mullally, the first female Archbishop of Canterbury...