Genesis 27:39-43
English Standard Version
40By your sword you shall live, and you shall serve your brother; but when you grow restless you shall break his yoke from your neck."
41Now Esau hated Jacob because of the blessing with which his father had blessed him, and Esau said to himself, "The days of mourning for my father are approaching; then I will kill my brother Jacob."
42But the words of Esau her older son were told to Rebekah. So she sent and called Jacob her younger son and said to him, "Behold, your brother Esau comforts himself about you by planning to kill you.
43Now therefore, my son, obey my voice. Arise, flee to Laban my brother in Haran