500
Thomas B. Marsh, David W. Patten, Brigham Young, Heber C. Kimball, Orson Hyde, William E. McLellin, Parley P. Pratt, Luke S. Johnson, William Smith, Orson Pratt, John F. Boynton, Lyman E. Johnson
Who were the Twelve Apostles who gave testimony to the truth of the Doctrine and Covenants?