When A History of God hit the New York Times bestseller list, Karen Armstrong suddenly became the go-to commentator on religion. Bill Moyers calls her “one of the foremost, and most original, thinkers on religion in our modern world.” Why is she so widely read? The answer is not immediately clear. Her prose is often maddeningly dense and her points elusive. Her drive to comprehend religion leads her to be constantly comparing elements of different religious traditions, but the connections she draws are not always illuminating.