Q: If we are to believe that the Nephites are truly ancient “Mormons,” where in the Book of Mormon does it say they held the Melchizedek priesthood? Where does it say they practiced baptism for the dead? Or believe that men can become Gods? How about God having a body of flesh and bones? What about the existence of a “heavenly mother”? Where does it say that all humans existed prior to this earthly existence? Or how Jesus and Lucifer are brothers?
A: The Book of Mormon is an abridgment or summary of many other books, possibly hundreds of other books. Mormon was the prophet who did the abridging and more than once he said he wasn’t writing anything close to 1% of what was going on.