2:11 And it came to pass in the thirteenth year there began to be wars and contentions throughout all the land; for the Gadianton robbers had become so numerous, and did slay so many of the people, and did lay waste so many cities, and did spread so much death and carnage throughout the land, that it became expedient that all the people, both the Nephites and the Lamanites, should take up arms against them.

 2:12 Therefore, all the Lamanites who had become converted unto the Lord did unite with their brethren, the Nephites, and were compelled, for the safety of their lives and their women and their children, to take up arms against those Gadianton robbers, yea, and also to maintain their rights, and the privileges of their church and of their worship, and their freedom and their liberty.

 2:13 And it came to pass that before this thirteenth year had passed away the Nephites were threatened with utter destruction because of this war, which had become exceedingly sore.