Book of Moses. Found in the Pearl of Great Price, one of Mormonism’s standard works. Mormon scholars claim the Book of Moses was given to Joseph Smith by direct revelation in June of 1830. Its purpose was to restore many “lost truths” that are not included in the Pentateuch. Mormon Apostle Bruce McConkie claimed the Book of Moses “is one of the most important documents the Lord has ever revealed” (Mormon Doctrine, p. 564).