13  And it came to pass that when the Lamanites saw that they could not overpower the Nephites they returned again to their own land; and many of them came over to dwell in the land of Ishmael and the land of Nephi, and did join themselves to the people of God, who were the people of ^bAnti-Nephi-Lehi.

  11  Yea, and they also knew the extreme hatred of the Lamanites towards their brethren, who were the people of Anti-Nephi-Lehi, who were called the people of Ammon—and they would not take up arms, yea, they had entered into a covenant and they would not break it—therefore, if they should fall into the hands of the Lamanites they would be destroyed.