'Birthright' in the Bible

But Jacob said, “First sell me your birthright.”

Esau said, “Behold, I am about to die; so of what use then is the birthright to me?”

And Jacob said, “First swear to me”; so he swore to him, and sold his birthright to Jacob.

Then Jacob gave Esau bread and lentil stew; and he ate and drank, and rose and went on his way. Thus Esau despised his birthright.

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?”

Now they were seated before him, the firstborn according to his birthright and the youngest according to his youth, and the men looked at one another in astonishment.

Now the sons of Reuben the firstborn of Israel (for he was the firstborn, but because he defiled his father’s bed, his birthright was given to the sons of Joseph the son of Israel; so that he is not enrolled in the genealogy according to the birthright.

Though Judah prevailed over his brothers, and from him came the leader, yet the birthright belonged to Joseph),

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