Isaac's firstborn (and favourite) son, and twin brother to Jacob. He turned out to be a big hairy loser though... First, he sold his inheritance to Jacob.... for lentil stew! Then, he was screwed over by his own brother and mother, when elderly, blind Isaac blessed Jacob, instead of Esau..... Yep, another messed up sibling rivalry story in Bible. At Least t didn't ended with death of one of the twins....