According to Hugh Nibley, we learn in Mosiah 1:4 that certain plates (the plates of brass) were written "in the language of the Egyptians." Nephi informs us (1 Nephi 3:19) that these same plates were in "the language of our fathers," and that the possession of them was necessary if a knowledge of that language was to be preserved among his people. To preserve mere characters but a single page of Hebrew and Egyptian signs would have been necessary, and Lehi or his sons could have produced such from memory, since they had already been taught them. And if the language in question were Hebrew, Lehi's children could have produced from their own resources any number of books in their own language, so that when Nephi expresses his belief that without that one volume of plates a language will be lost--the ancient language of his fathers--he cannot possibly be speaking of Hebrew. The preservation of Hebrew would naturally require possession of the scriptures, the canon of the pure language, but these could be had anywhere in Judah and would not require the dangerous mission to Laban. The language of Lehi's forefathers was a foreign language; and when Nephi tells us it was the language of the Egyptians he means what he says. Since time immemorial Israelites had been sojourning in Egypt individually and in groups, and there is nothing the least surprising in the possibility that Lehi's ancestors were among such settlers. [Hugh Nibley, Lehi in the Desert, F.A.R.M.S., p. 24]