Joseph of Egypt uses "a Moses" as the identifier, almost indicating a title rather than a name. This leave open the possibility that the original was not so specific as to name, but either Lehi or Joseph Smith filled in the obvious person the possible title referred to. The rest of the text makes it very clear that the prophecy is directly related to the Moses. Just as with Nephi's prophecy of the birth of the Messiah, but Book of Mormon is much freer with the historical names of prophesied people.