The Book of Alma the Son of Alma
The account of Alma, who was the son of Alma, the first and chief judge over the people of Nephi, and also the high priest over the Church. An account of the reign of the judges, and the wars and contentions among the people. And also an account of a war between the Nephites and the Lamanites, according to the record of Alma, the first and chief judge.
Nehor teaches false doctrines, establishes a church, introduces priestcraft, and slays Gideon—Nehor is executed for his crimes—Priestcrafts and persecutions spread among the people—The priests support themselves, the people care for the poor, and the Church prospers. About 91–88 B.C.
Read Alma 1 here: https://site.churchofjesuschrist.org/study/scriptures/bofm/alma/1?lang=eng