He relates that when he was 17 years of age, while seeking after the Lord he had a nocturnal vision, and a wonderful display of celestial glory. An angel descended and warned him that God was about to make an astonishing revelation to the world, and then directed him to go to such a place, and after prying up a stone he should find a number of plates of the color of gold inscribed with hieroglyphics, and under them a breastplate, and under that a transparent stone or stones which was the Urim and Thummin mentioned by Moses. The vision and the command were repeated four times that night and once on the following day.