50:11 And thus he cut off all the strongholds of the Lamanites in the east wilderness, yea, and also on the west, fortifying the line between the Nephites and the Lamanites, between the land of Zarahemla and the land of Nephi, from the west sea, running by the head of the river Sidon-- the Nephites possessing all the land northward, yea, even all the land which was northward of the land Bountiful, according to their pleasure.

 50:12 Thus Moroni, with his armies, which did increase daily because of the assurance of protection which his works did bring forth unto them, did seek to cut off the strength and the power of the Lamanites from off the lands of their possessions, that they should have no power upon the lands of their possession.

 50:13 And it came to pass that the Nephites began the foundation of a city, and they called the name of the city Moroni; and it was by the east sea; and it was on the south by the line of the possessions of the Lamanites.