Protestantism is a movement within Christianity that originated in the sixteenth-century Protestant Reformation. It is considered to be one of the four principal traditions within Christianity, together with Roman Catholicism, Anglicanism, and Orthodoxy. Protestantism is associated with the belief that the Bible (rather than church tradition or ecclesiastical interpretations of the Bible) is the final source of authority for Christians. Another salient feature of Protestant theology is its doctrine that salvation comes through faith alone, by the grace of God. The major sects of Christianity that belong to Protestantism include Lutherans, Episcopalians, Methodists, Baptists, Church of Christ, Holiness, Church of God, Pentecostals, and Charismatics. Cults that claim to be Christians (which include Jehovah's Witnesses, Mormons, and Seventh-Day Adventists) also claim to be Protestant.