 He outlined a doomsday prophecy, which included a third World War, and described a final conflict culminating in a nuclear "Armageddon", borrowing the term from the Book of Revelation .Asahara often preached the necessity of Armageddon for "human relief".He eventually declared, "Put tantra Vajrayana into practice in accordance with the doctrines of Mahamudra," and he led a series of terrorist attacks using a secret organization hidden from ordinary believers.