Jacob says that he is his son, not specificially Esau.
11 And Rebecca took the goodly rainment of Esau, her elder son, which was with her in the house, and she clothed Jacob, her younger son, (with them), and she put the skins of the kids upon his hands and on the exposed parts of his neck.
12 And she gave the meat and the bread which she had prepared into the hand of her son Jacob.
13 And Jacob went in to his father and said: ‘I am thy son: I have done according as thou badest me: arise and sit and eat of that which I have caught, father, that thy soul may bless me.’
14 And Isaac said to his son: ‘How hast thou found so quickly, my son?
15 ‘And Jacob said: ‘Because <the Lord> thy God caused me to find.’
16 And Isaac said unto him: Come near, that I may feel thee, my son, if thou art my son Esau or not.’
17 And Jacob went near to Isaac, his father, and he felt him and said: ‘The voice is Jacob’s voice, but the hands are the hands of Esau,’
18 and he discerned him not, because it was a dispensation from heaven to remove his power of perception and Isaac discerned not, for his hands were hairy as his brother Esau’s, so that he blessed him.
19 And he said: ‘Art thou my son Esau? ’ and he said: ‘I am thy son’: and he said, ‘Bring near to me that I may eat of that which thou hast caught, my son, that my soul may bless thee.’
20 And he brought near to him, and he did eat, and he brought him wine and he drank.
21 And Isaac, his father, said unto him: ‘Come near and kiss me, my son.
22 And he came near and kissed him. And he smelled the smell of his raiment, and he blessed him and said: ‘Behold, the smell of my son is as the smell of a <full> field which the Lord hath blessed.