Genesis 26:33-35

26:33 So he named it Shibah; that is why the name of the city has been Beer Sheba to this day.

26:34 When Esau was forty years old, he married Judith the daughter of Beeri the Hittite, as well as Basemath the daughter of Elon the Hittite. 26:35 They caused Isaac and Rebekah great anxiety.