Restorationism, Adventism, and new Christian-derived religions: Restoration, Prophecy, and the Re-Making of Christian Authority, AD 1800-1900

Between AD 1800 and 1900, Christianity entered a period of unusually intense restorationist experimentation. The voluntary, revivalist Protestant world inherited from the seventeenth and eighteenth centuries interacted with frontier expansion, disestablishment, mass print, transatlantic evangelical networks, democratic suspicion of inherited authority, and heightened apocalyptic expectation. The result was not one restoration movement but several genealogically distinct projects. This chapter reconstructs the Second Great Awakening and then traces the Stone-Campbell movement, Plymouth Brethren, Millerism and the Adventist family, Seventh-day Adventism, Christadelphians, the Latter-day Saint movement, Christian Science, and the Bible Student movement that later produced Jehovah's Witnesses. It distinguishes ecclesial restoration within historic Protestantism from Adventist renewal, non-Nicene biblical restorationism, and new religious formation grounded in additional scripture, prophetic authority, or metaphysical reinterpretation. Primary writings, official doctrinal sources, denominational archives, and modern scholarship are used to separate founder teaching from later doctrine and to identify direct descent, influence, parallel development, and post-founder institutional change. The chapter argues that the century's recurring claim was not simply that churches needed reform, but that historic Christianity had lost an apostolic reality that now had to be recovered. A Sola Scriptura assessment affirms the legitimate call to test inherited traditions by Scripture while rejecting any restoration claim that makes new revelation, prophetic chronology, institutional authority, or non-biblical metaphysics superior or coordinate to the apostolic Word. Genealogically, the century created both durable Protestant families and Christian-derived religions whose authority structures would strongly shape twentieth-century Pentecostal, fundamentalist, prophetic, and apocalyptic Christianity.