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 ^aIshmael 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 ^abrethren, who were the ^bpeople 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.