Genesis 25:34

Now it happened that when Isaac was old and his eyes were too dim to see, that he called his older son Esau and said to him, “My son.” And he said to him, “Here I am.”

And Isaac his father said to him, “Who are you?” And he said, “I am your son, your firstborn, Esau.”

Then he said, “Is he not rightly named Jacob, for he has supplanted me these two times? He took away my birthright, and behold, now he has taken away my blessing.” And he said, “Have you not reserved a blessing for me?”

that also there be no sexually immoral or godless person like Esau, who sold his own birthright for a single meal.