Genesis 25:27-33
English Standard Version
Chapter 25
27When the boys grew up, Esau was a skillful hunter, a man of the field, while Jacob was a quiet man, dwelling in tents. 28Isaac loved Esau because he ate of his game, but Rebekah loved Jacob.
29Once when Jacob was cooking stew, Esau came in from the field, and he was exhausted.
30And Esau said to Jacob, "Let me eat some of that red stew, for I am exhausted!" (Therefore his name was called Edom. )
31Jacob said, "Sell me your birthright now."
32Esau said, "I am about to die; of what use is a birthright to me?"
33Jacob said, "Swear to me now." So he swore to him and sold his birthright to Jacob.