Second Coming
The Second Coming (sometimes called the Second Advent or the Parousia) is a Christian and Islamic belief regarding the future (or past) return of Jesus Christ after his ascension to heaven about two thousand years ago. The idea is based on messianic prophecies and is part of most Christian eschatologies.
Seventh-day Adventist Church
The Seventh-day Adventist Church is the largest of several Adventist groups which arose from the Millerite movement of the 1840s in upstate New York, a phase of the Second Great Awakening. William Miller predicted on the basis of Daniel 8:14–16 and the "day-year principle" that Jesus Christ would return to Earth between the spring of 1843 and the spring of 1844. In the summer of 1844, Millerites came to believe that Jesus would return on October 22, 1844, understood to be the biblical Day of Atonement for that year. Miller's failed prediction became known as the "Great Disappointment".