Great Apostasy
In Christianity, the Great Apostasy is the notion that mainstream Christian Churches have fallen away from the faith founded by Jesus and promulgated through his Twelve Apostles. A belief in a Great Apostasy has been characteristic of the Restorationist tradition of Christianity, which includes unrelated groups emerging after the Second Great Awakening, such as the Christadelphians, Swedenborgians, Non-Denominational, Latter Day Saints, Jehovah's Witnesses, Oneness Pentecostals, and Iglesia ni Cristo.