‘And Isaac trembled very violently, and said, “Then who is he who has taken venison, and brought it to me, and I have eaten of all before you came, and have blessed him. Yes and he shall be blessed.” '
Isaac is distraught. He realises that he has been deceived. But he is aware, as all are, that what has been given cannot be taken back. The seal has been made personally with Jacob, and the blessing has been given.
Isaac's words confirm the close connection between the eating and the blessing. They were all part of the same process, the bonding and then the blessing.
“Yes, and he shall be blessed.” There is no going back from what he has done.