Genesis 27:19-20, 23-24

Jacob answered his father, “I’m your firstborn son Esau. I did what you told me. Come now; sit up and eat of my game so you can give me your personal blessing.” Isaac said, “So soon? How did you get it so quickly?” “Because your GOD cleared the way for me.”

But as he was about to bless him he pressed him, “You’re sure? You are my son Esau?” “Yes. I am.”