Esau chose three wives from among Canaanite women: Adah (daughter of Elon the Hittite), Oholibamah (daughter of Anah son of Zibeon the Hivite ), and Basemath (Ishmael’s daughter, sister of Nebaioth).
went to Ishmael’s clan and chose a woman named Mahalath to be one of his wives. She was the daughter of Ishmael, Abraham’s son, and sister of Nebaioth.
and I will make you swear by Yahweh, the God of heaven and earth, that you will not acquire a wife for my son among the daughters of the Canaanites among whom I am living.
Be careful that no one among you lives in immorality, becoming careless about God’s blessings, like Esau who traded away his rights as the firstborn for a simple meal.
Perhaps. But because of the danger of immorality, each husband should have sexual intimacy with his wife and each wife should have sexual intimacy with her husband.
Later, Rebekah said to Isaac, “I’m so disgusted with our Hittite daughters-in-law. I’d rather die than see Jacob marry one of these local girls—these Hittite women!”