Jenkins takes a stand against current scholars who assert that variant, alternative Christianities disappeared in the fourth and fifth centuries on the heels of a newly formed hierarchy under Constantine, intent on crushing unorthodox views. In reality, Jenkins says, the largest churches in the world were the "heretics" who lost the orthodoxy battles. These so-called heretics were in fact the most influential Christian groups throughout Asia, and their influence lasted an additional one thousand years beyond their supposed demise.
Jenkins offers a new lens through which to view our world today, including the current conflicts in the Middle East, Asia, and Africa. Without this lost history, we lack an important element for understanding our collective religious past. By understanding the forgotten catastrophe that befell Christianity, we can appreciate the surprising new births that are occurring in our own time, once again making Christianity a true world religion.