September 21 is a significant day in the history of The Church of Jesus Christ of Latter-day Saints. On the evening of that day in 1823, Joseph Smith was visited by an angel named Moroni — a visit that revealed the existence of gold plates that became the Book of Mormon.
On the 200th anniversary of that special day, Church President Russell M. Nelson and Elder Gary E. Stevenson of the Quorum of the Twelve Apostles shared social media posts about the importance of the Book of Mormon.