5 April 1839 Theodore Turley confronts David Whitmer about the gold plates.
“[Theodore] Turley said, ‘Gentlemen, I presume there are men here who have heard [John] Corrill say, that Mormonism was true, that Joseph Smith was a prophet, and inspired of God. I now call upon you, John Whitmer: you say Corrill is a moral and a good man; do you believe him when he says the Book of Mormon is true, or when he says it is not true? There are many things published that they say are true, and again turn around and say they are false.’ Whitmer asked, ‘Do you hint at me?’ Turley replied, ‘If the cap fits you, wear it; all I know is that you have published to the world that an angel did present those plates to Joseph Smith.’ Whitmer replied: ‘I now say, I handled those plates; there were fine engravings on both sides. I handled them;’ and he described how they were hung [on rings], and [said] ‘they were shown to me by a supernatural power;’ he acknowledged all.”
Joseph Smith, History of The Church of Jesus Christ of Latter-day Saints, 7 volumes, edited by Brigham H. Roberts, (Salt Lake City: Deseret Book, 1957), 3:307–308.