Millennial fervor gripped many people around the world in the early nineteenth century. While Christians anticipated the return of Jesus Christ, a wave of expectation swept through Islam that the "Lord of the Age" would soon appear. In Persia, this reached a dramatic climax on May 23, 1844, when a twenty-five-year-old merchant from Shiraz named Siyyid 'Ali-Muhammad, later titled "The Bab," announced that he was the bearer of a divine Revelation destined...