Lehi was a Nephite city built in the twentieth year of the reign of the judges, when the people of Nephi began many cities on the north. It was raised “in a particular manner” by the borders of the seashore, during a time when the Nephites prospered and grew (Alma 50:15–18).
The land of Lehi bordered the land of Morianton, both lying along the seashore. In the twenty-fourth year, the people of Morianton claimed part of the land of Lehi and took up arms against them; the people of Lehi fled to the camp of Moroni and appealed for help, having not been in the wrong (Alma 50:25–36).
The city was later taken in the Lamanite offensive led by Amalickiah, who captured Lehi along with Nephihah, Morianton, Omner, Gid, and Mulek, all on the east borders by the seashore (Alma 51:24–27). The record does not describe the city’s recapture, but after retaking Nephihah, Moroni advanced from there to the land of Lehi, and the Lamanites fled before his army (Alma 62:30–31).