And you shall swear by the Lord, the God of heaven and earth, that you will not take a wife for my son from the daughters of the Canaanites, among whom I have settled,
Then Rebekah said to Isaac, I am weary of my life because of the daughters of Heth [these wives of Esau]! If Jacob takes a wife of the daughters of Heth such as these Hittite girls around here, what good will my life be to me?
So Esau went to Ishmael and took to be his wife, [in addition] to the wives he [already] had, Mahalath daughter of Ishmael, Abraham's son, the sister of Nebaioth.
And you take of their daughters for your sons, and their daughters play the harlot after their gods and make your sons play the harlot after their gods.
That no one may become guilty of sexual vice, or become a profane (godless and sacrilegious) person as Esau did, who sold his own birthright for a single meal. [Gen. 25:29-34.]
Then David said to Ahimelech the Hittite and to Abishai son of Zeruiah, brother of Joab, Who will go down with me into the camp of Saul? And Abishai said, I will go down with you.