On Sunday afternoon, 7 April 1844, the Prophet Joseph Smith delivered what has been called his greatest sermon, the King Follett Discourse. It has also been published more frequently than any other of Joseph's discourses. In the speech, which lasted over two hours, the Prophet spoke concerning some twenty-seven doctrinal subjects, including the character of God, the origin and destiny of man, the unpardonable sin, the resurrection of children and the Prophet's love for all men. Who was King Follett, and what were the historical circumstances surrounding this, the last conference address of Joseph Smith? What makes the King Follett Discourse the Prophet's greatest sermon?