Applewhite taught that he was a walk-in, a concept that had gained popularity in the New Age movement during the late 1970s. Walk-ins were said to be higher beings who took control of adult bodies to teach humanity. This concept informed Applewhite's view of resurrection; he believed that his group's souls were to be transported to a spaceship, where they would enter other bodies. Applewhite abandoned the metaphor of a butterfly in favor of describing the body as a mere container, a vehicle that souls could enter and exit. This dualism may have been the product of the Christology that Applewhite learned as a young man; Lewis writes that the group's teachings had "Christian elements were basically grafted on to a New Age matrix". In a profile of the group for "Newsweek", Kenneth Woodward compares his dualism to that of ancient Christian Gnosticism, although Peters notes that his theology departs from Gnosticism by privileging the physical world.