[T]he parallels between the two stories [in Ether and Mormon] are so striking, down to the last battle occurring at the same hill, that Mormon writer B.H. Roberts wondered: ‘Is all this sober history? …Or is it a wonder-tale of an immature mind, unconscious of what a test he is laying on human credulity?’ It is puzzling why Smith would add a repetitive story to the Book of Mormon,”
Dan Vogel, Joseph Smith: The Making of a Prophet (Salt Lake City, UT: Signature Books, 30 April 2004), 340; see also B.H. Roberts, Studies of the Book of Mormon, ed. Brigham D. Madsen (Urbana, IL: University of Illinois Press, 1985), 283.