Jacob replied, “First sell me your birthright.”

“Look, I am about to die,” Esau said. “What good is the birthright to me?”

But Jacob said, “Swear to me first.” So he swore an oath to him, selling his birthright to Jacob.

Then Jacob gave Esau some bread and some lentil stew. He ate and drank, and then got up and left. So Esau despised his birthright.

Esau said, “Isn’t he rightly named Jacob? This is the second time he has taken advantage of me: He took my birthright, and now he’s taken my blessing!” Then he asked, “Haven’t you reserved any blessing for me?”

Reuben

The sons of Reuben the firstborn of Israel (he was the firstborn, but when he defiled his father’s marriage bed, his rights as firstborn were given to the sons of Joseph son of Israel; so he could not be listed in the genealogical record in accordance with his birthright,