The Triumph of Christianity

The Triumph of Christianity: How a Forbidden Religion Swept the World is a book by American New Testament scholar Bart D. Ehrman. Published on February 13, 2018, by Simon & Schuster, it presents a narrative and analysis of how Christianity expanded from a small Jewish movement to the dominant religion of the Roman Empire. The book emphasizes cumulative conversion through social networks, the roles of Paul and Constantine, and the interaction between Christian claims, Roman religious life, and imperial policy, written for a general audience drawing on current scholarship. A UK and Commonwealth edition appeared with the subtitle How a Small Band of Outcasts Conquered an Empire from Oneworld Publications in 2018.