Genesis 25:20

25:20 When Isaac was forty years old, he married Rebekah, the daughter of Bethuel the Aramean from Paddan Aram and sister of Laban the Aramean.

Genesis 26:34

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.

Genesis 28:9

28:9 So Esau went to Ishmael and married Mahalath, the sister of Nebaioth and daughter of Abraham’s son Ishmael, along with the wives he already had.