Genesis 26:31

28 They said, "We saw plainly that Yahweh was with you. We said, `Let there now be an oath between us, even between us and you, and let us make a covenant with you,

29 that you will do us no harm, as we have not touched you, and as we have done to you nothing but good, and have sent you away in peace.` You are now the blessed of Yahweh."

30 He made them a feast, and they ate and drink.

31 They rose up some time in the morning, and swore one to another. Isaac sent them away, and they departed from him in peace.

32 It happened the same day, that Isaac`s servants came, and told him concerning the well which they had dug, and said to him, "We have found water."

33 He called it Shibah. Therefore the name of the city is Beersheba to this day.

34 When Esau was forty years old, he took as wife Judith, the daughter of Beeri the Hittite, and Basemath, the daughter of Elon the Hittite.