21 September 1823. Joseph Smith reported to have had a vision on this day in which an angel named Moroni appeared to him to reveal the existence of "golden plates" on which was inscribed in "Reformed Hieroglyphics" an account of ancient North Americans who supposedly trace their origin to the Middle East. Earlier, sometime in the spring of 1820, Joseph Smith at age 15 (b. December 23, 1805) reportedly went to the woods to pray early in the morning and sees a pillar of light and
"two Personages, whose brightness and glory defy all description, standing above me in the air, One of them spake unto me, calling me by name and said, pointing to the other - This is My Beloved Son. Hear Him! (v. 17). He then asked of them which religious group he should join and was told the he "must join none of them, for they were all wrong; and the Personage who addressed me said that all their creeds were an abomination in his sight; that those professors wree all corrupt; that: 'they draw near to me with their lips, but their hearts are far from me, they teach for doctrines the commandments of men, having a form of godliness, but they deny the power thereof.'" (v. 19)."
And so was born another sect in Christendom.
Source: The Church of Jesus Christ of Latter-Day Saints, "Joseph Smith - History," Book of Mormon, Doctrine & Covenants, Pearl of Great Price (Salt Lake City: The Church of Jesus Christ of Latter-Day Saints,1981), 27-48.