Alma 3:10-11; refer in this text to Hel. 11:24
“The Book of Mormon is careful to specify that the terms Lamanite and Nephite are used in a loose and general sense to designate not racial but political (Moroni 1:9), military (Alma 43:4), religious (4 Nephi 38), and cultural (Alma 53:10,15; 3:10-11) divisions and groupings of people. The Lamanite and Nephite division was tribal rather than racial, each of the main groups representing an amalgamation of tribes that retained their identity (Alma 43:13; 4 Nephi 36).” (Hugh Nibley, Since Cumorah, p. 246)
“Plainly it [Book of Mormon] is meant for us, as it reminds us many times; it is the story of what happened to the Nephites—and we are the Nephites.” (Hugh Nibley, Since Cumorah, pp. 390-391)