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". Hiram Edson and other Millerites came to believe that Miller's calculations were correct, but that his interpretation of Daniel 8:14 was flawed as he assumed Christ would come to cleanse the world. These Adventists came to the conviction that Daniel 8:14 foretold Christ's entrance into the most holy place of the heavenly sanctuary rather than his Second Coming. Over the next few decades this understanding of a sanctuary in heaven developed into the doctrine of the investigative judgment, an eschatological process that commenced in 1844, in which every person would be judged to verify their eligibility for salvation and God's justice will be confirmed before the universe. 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." Development of Sabbatarianism 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. Bates was introduced to the Sabbath doctrine through a tract written by Millerite preacher Thomas M. Preble, who in turn had been influenced by Rachel Oakes Preston, a young Seventh Day Baptist. This message was gradually accepted and formed the topic of the first edition of the church publication The Present Truth, which appeared in July 1849. Organization and recognition 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. They embraced the doctrines of the Sabbath, the heavenly sanctuary interpretation of Daniel 8:14, conditional immortality, and the expectation of Christ's premillennial return. Among its most prominent figures were Joseph Bates, James White, and Ellen G. White. 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. The church was formally