By 1945, the church reported 210,000 members in the US and Canada, and 360,000 elsewhere; the budget was million and enrollment in church schools was 140,000.
Christianity Today recognized the Seventh-day Adventist church as " the fifth-largest Christian communion worldwide" in its January 22, 2015 issue.The official teachings of the Seventh-day Adventist denomination are expressed in its 28 Fundamental Beliefs.They embraced the doctrines of the Sabbath, the heavenly sanctuary interpretation of Daniel , conditional immortality, and the expectation of Christ's premillennial return.Among its most prominent figures were Joseph Bates, James White, and Ellen G. Ellen White came to occupy a particularly central role; her many visions and spiritual leadership convinced her fellow Adventists that she possessed the gift of prophecy.When this did not happen (an event known as the "Great Disappointment"), most of his followers disbanded and returned to their original churches.
Hiram Edson and other Millerites came to believe that Miller's calculations were correct, but that his interpretation of Daniel was flawed as he assumed Christ would come to cleanse the world.
This group of Adventists continued to believe that Christ's Second Coming would continue to be imminent, however they resisted setting further dates for the event, citing Revelation 10:6, "that there should be time no longer." As the early Adventist movement consolidated its beliefs, the question of the biblical day of rest and worship was raised.
The foremost proponent of Sabbath-keeping among early Adventists was Joseph Bates.
This message was gradually accepted and formed the topic of the first edition of the church publication The Present Truth (now the Adventist Review), which appeared in July 1849.
For about 20 years, the Adventist movement consisted of a small, loosely knit group of people who came from many churches and whose primary means of connection and interaction was through James White's periodical The Advent Review and Sabbath Herald.
The denomination grew out of the Millerite movement in the United States during the mid-19th century and was formally established in 1863.