Isaac summoned Jacob, blessed him, and commanded him: "Don't take a wife from the Canaanite women.
References for Genesis 28:1
Go at once to Paddan-aram, to the house of Bethuel, your mother's father. Marry one of the daughters of Laban, your mother's brother.
May God Almighty bless you and make you fruitful and multiply you so that you become an assembly of peoples.
References for Genesis 28:3
May God give you and your offspring the blessing of Abraham so that you may possess the land where you live as an alien, the land God gave to Abraham."
References for Genesis 28:4
So Isaac sent Jacob to Paddan-aram, to Laban son of Bethuel the Aramean, the brother of Rebekah, the mother of Jacob and Esau.
Esau noticed that Isaac blessed Jacob and sent him to Paddan-aram to get a wife there. When he blessed him, Isaac commanded Jacob not to marry a Canaanite woman.