In The Triumph of Christianity, Bart Ehrman, a master explainer of Christian history, texts, and traditions, shows how a religion whose first believers were twenty or so illiterate day laborers in a remote part of the empire became the official religion of Rome, converting some thirty million people in just four centuries. The Triumph of Christianity combines deep knowledge and meticulous research in an eye-opening, immensely readable narrative that upends the way we think about the single most important cultural transformation our world has ever seen -- one that revolutionized art, music, literature, philosophy, ethics, economics, and law.