Genesis 21:26

Now, therefore, swear to me here by God that you will not deal falsely with me, nor with my son, nor with my son’s son. But according to the kindness that I have done to you, you shall do to me, and to the land in which you have lived as a foreigner.”

Abraham said, “I will swear.”

Abraham complained to Abimelech because of a water well, which Abimelech’s servants had violently taken away.

Abraham took sheep and cattle, and gave them to Abimelech. Those two made a covenant.

Abraham set seven ewe lambs of the flock by themselves.

Abimelech said to Abraham, “What do these seven ewe lambs, which you have set by themselves, mean?”