From the Hebrew name עֵשָׂו ('Esaw) which possibly meant "hairy". In the Old Testament Esau is the elder of the twin sons of Isaac and Rebecca. Once when he was very hungry he sold his birthright to his twin Jacob for a bowl of stew. Later Jacob disguised himself as Esau and received the elder son's blessing from the blind Isaac. Esau was the ancestor of the Edomites.