Esau is the eldest son of Isaac and Rebekah in the Book of Genesis. Jacob is his twin brother. (Chapter 25). He is a 'cunning hunter, a man of the field' (25:27) Esau gives his birthright as eldest to Jacob for a meal of lentil stew. He is then tricked out of his father's blessing by Rebekah and Jacob, with Jacob instead receiving the blessing. 