The first chapter presents Mormonism’s apocalyptic master narrative from September 1823 with Joseph Smith’s first apocalyptic-themed apparition, to the organization of a theocratic legislature that would govern the world in the coming millennium. Over this twenty-year period, a robust vision of the last days took shape. This vision included the gathering of the righteous to safety before the coming of end times destructions, warfare in the United States (both among citizens and against invading armies), the establishment of the New Jerusalem in Missouri, and the return of Jesus Christ. The chapter also examines how Latter-day Saints who were not part of the hierarchy responded to this narrative and thereby contributed to the apocalyptic worldview.