Genesis 26:26-31

Then Abimelech came to him from Gerar with Ahuzzath, one of his friends, and Phichol the commander of his army. And Isaac said to them, “Why have you come to me, since you hate me and have sent me away from you?” But they said, “We have certainly seen that the LORD is with you. So we said, ‘Let there now be an oath between us, between you and us; and let us make a covenant with you, that you will do us no harm, since we have not touched you, and since we have done nothing to you but good and have sent you away in peace. You are now the blessed of the LORD.’ ” So he made them a feast, and they ate and drank. Then they arose early in the morning and swore an oath with one another; and Isaac sent them away, and they departed from him in peace.