Strang, who had his own set of supernatural metal plates. Later, Whitmer organized his own splinter group based on his authority as one of the Three Witnesses and even later supported another group headed by his brother, John. In his pamphlet, "An Address to All Believers in Christ" (1887), Whitmer reaffirmed his witness to the golden plates, but he also criticized Smith, including the introduction of plural marriage. "If you believe my testimony to the Book of Mormon, if you believe that God spake to us three witnesses by his own voice," wrote Whitmer, "then I tell you that in June, 1838, God spake to me again by his own voice from the heavens, and told me to 'separate myself from among the Latter Day Saints, for as they sought to do unto me, should it be done unto them.'" Nevertheless, Whitmer is regarded by Mormons as an "enduring witness to the genuineness of the prophet Joseph Smith and his message." See also Reformed Egyptian Notes References 1829 in Christianity 1829 in New York (state) 1830 in Christianity 1830 in New York (state) Angelic visionaries 3 witnesses Doctrine and Covenants people Fayette, New York Trios