“And Rebekah took goodly raiment of her eldest son Esau, which were with her in the house, and put them upon Jacob her younger son.
And she put the skins of the kids of the goats upon his hands, and upon the smooth of his neck. And she gave the savoury meat and the bread, which she had prepared, into the hands of her son, Jacob.
And he came unto his father, and said, My father: and he said, Here am I; who art thou, my son?
And Jacob said unto his father, I am Esau thy firstborn; I have done according as thou badest me: arise, I pray thee, sit and eat of my venison, that thy soul may bless me.
And Isaac said unto his son, How is it that thou hast found it so quickly, my son? And he said, Because the LORD thy God brought it to me.
And Isaac said unto Jacob, Come near, I pray thee, that I may feel thee, my son, whether thou be my very son Esau or not.
And Jacob went near unto Isaac his father; and he felt him and said, The voice is Jacob’s voice, but the hands are the hands of Esau.
And he discerned him not, because his hands were hairy, as his brother Esau’s hands: so he blessed him.
Genesis, Chapter 27, verses 15-23
N.B. David Miliband’s two sons are named Isaac and Jacob!