Genesis 26:34-35

34When Esau was forty years old, he took aJudith the daughter of Beeri the Hittite to be his wife, and Basemath the daughter of Elon the Hittite, 35and bthey made life bitter
Hebrew  they were bitterness of spirit
for Isaac and Rebekah.

Genesis 27:46

46Then Rebekah said to Isaac, d“I loathe my life because of the Hittite women.
Hebrew daughters of Heth
fIf Jacob marries one of the Hittite women like these, one of the women of the land, what good will my life be to me?”

Copyright information for ESV