A Christian denomination that traces its origin to William Miller, who predicted that the world would end in the mid-1840s based on his reading of the Book of Daniel. When that failed to occur, Miller’s followers split into smaller groups, one of which eventually became the Seventh-day Adventist Church. Seventh-day Adventists observe Saturday as their Sabbath. Ministers use the title pastor or elder, which should be capitalized before a name on first reference. The honorific the Rev. is not used.