The Book of Nephi Who Is the Son of Nephi—One of the Disciples of Jesus Christ
An account of the people of Nephi, according to his record.
The Nephites and the Lamanites are all converted unto the Lord—They have all things in common, work miracles, and prosper in the land—After two centuries, divisions, evils, false churches, and persecutions arise—After three hundred years, both the Nephites and the Lamanites are wicked—Ammaron hides up the sacred records. About A.D. 35–321.
Read 4 Nephi 1 here: https://www.churchofjesuschrist.org/study/scriptures/bofm/4-ne/1?lang=eng