Genesis 27:35-36

27:35 But Isaac replied, “Your brother came in here deceitfully and took away your blessing.” 27:36 Esau exclaimed, “‘Jacob’ is the right name for him! He has tripped me up two times! He took away my birthright, and now, look, he has taken away my blessing!” Then he asked, “Have you not kept back a blessing for me?”

Genesis 27:41-45

27:41 So Esau hated Jacob because of the blessing his father had given to his brother. Esau said privately, “The time of mourning for my father is near; then I will kill my brother Jacob!”

27:42 When Rebekah heard what her older son Esau had said, she quickly summoned her younger son Jacob and told him, “Look, your brother Esau is planning to get revenge by killing you. 27:43 Now then, my son, do what I say. Run away immediately to my brother Laban in Haran. 27:44 Live with him for a little while until your brother’s rage subsides. 27:45 Stay there until your brother’s anger against you subsides and he forgets what you did to him. Then I’ll send someone to bring you back from there. Why should I lose both of you in one day?”