4:4 But it came to pass in the fifty and sixth year of the reign of the judges, there were dissenters who went up from the Nephites unto the Lamanites; and they succeeded with those others in stirring them up to anger against the Nephites; and they were all that year preparing for war.

 4:5 And in the fifty and seventh year they did come down against the Nephites to battle, and they did commence the work of death; yea, insomuch that in the fifty and eighth year of the reign of the judges they succeeded in obtaining possession of the land of Zarahemla; yea, and also all the lands, even unto the land which was near the land Bountiful.