Genesis 27:19-20, 24

Jacob said to him, “I am Esau, your first son. I have done what you told me. Now sit up and eat some meat of the animal I hunted for you. Then bless me.” But Isaac asked his son, “How did you find and kill the animal so quickly?” Jacob answered, “Because the LORD your God helped me to find it.”

Isaac asked, “Are you really my son Esau?” Jacob answered, “Yes, I am.”