Genesis 27:41-42

41So Esau 1held a grudge against Jacob because of the blessing with which his father had blessed him; and Esau said 2to himself, “3The days of mourning for my father are near; then I will kill my brother Jacob.”

42Now when the words of her elder son Esau were reported to Rebekah, she sent word and called her younger son Jacob, and said to him, “Behold your brother Esau is consoling himself concerning you by planning to kill you.