Witnesses, Three See also Book of Mormon; Cowdery, Oliver; Harris, Martin; Whitmer, David; Witness three witnesses to see book by power of God and testify to its truth, 2 Ne. 27:12 (Ether 5:2–4). Three Witnesses receive same power and gift as Joseph Smith, D&C 17:7. ministering of angels to Three Witnesses, D&C 20:10.