Genesis 27:21-24
27:21 Then Isaac said to Jacob, “Come closer so I can touch you, my son, and know for certain if you really are my son Esau.”
27:22 So Jacob went over to his father Isaac, who felt him and said, “The voice is Jacob’s, but the hands are Esau’s.”
27:23 He did not recognize him because his hands were hairy, like his brother Esau’s hands. So Isaac blessed Jacob.
27:24 Then he asked, “Are you really my son Esau?” “I am,” Jacob replied.