The voice is Jacob's voice, but the hands are the hands of Esau.
Esausaid,Behold,Iamatthe pointto die: and what profit shall this birthright do to me? And Jacob said, Swear to me this day: and he sware unto him: and he sold his birthright unto Jacob. Then Jacob gave Esau bread and pottage of lentiles; and he did eat and drink, and roseup, and went his way: thus Esau despised his birthright.Bible (Old Testament)
At length Jacob came to Isaac his father to Mam´re, to Kir´i·ath-ar´ba, that is to say, He´bron, where Abraham and also Isaac had resided as aliens. And the days of Isaac came to be a hundred and eighty years. After that Isaac expired and died and was gathered to his people, old and satisfied with days, and E´sau and Jacob his sons buried him.