We first hear of Jershon in the book when the people of Ammon, seeking protection from their fellow Lamanites, resettle there about 76 BC ([[s:Book of Mormon/Alma#27 22|Alma27 22-24]]). Because of the threat of war from the Zoramites in Antionum to the south, the Ammonites were relocated to Melek about 73 BC. All the references to Jershon come from this three to four year period. References are from The Book of Mormon: Another Testament of Jesus Christ, translated by Joseph Smith, Jr. (Salt Lake City, Utah: The Church of Jesus Christ of Latter-day Saints, 1981 [first edition, 1830]).