Genesis 26:26-31

Then King Abimelech came to Isaac from Gerar with his adviser Ahuzzath and his army commander Phicol. Isaac asked them, “Why have you come to me now, since you hated me and sent me away?” They answered, “We have witnessed firsthand how powerfully YAHWEH’s favor has been with you, so we say, let there be a peace treaty among us. Let us make a covenant to do each other no harm. Swear to us that you will not trouble us, just as we have not troubled you and have always treated you well and sent you away in peace. Now look at how YAHWEH has blessed you!” So Isaac prepared a wonderful feast for them, and they all ate and drank together. Then the next morning, they got up early and exchanged oaths. Isaac said goodbye to them, and they left Isaac in peace.