The eleventh to thirteen centuries saw a resurgence of movements teaching the ancient ascension practices. Foremost among them was the Cathars, who may have been the reincarnation of the Essenes and Gnostics. It was their mission to show others how an ordinary human being could attain angelic status by returning to their glorified light body in heaven. William Henry guides us through the story of the Cathars and the ascension codes they taught. Perhaps the most prominent of the Cathars was Dante Alighieri, who revealed the ascension process in his Divine Comedy.