Genesis 25:32

Jacob boiled stew. Esau came in from the field, and he was famished.

Esau said to Jacob, “Please feed me with some of that red stew, for I am famished.” Therefore his name was called Edom.

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

Jacob said, “Swear to me first.”

He swore to him. He sold his birthright to Jacob.

Jacob gave Esau bread and lentil stew. He ate and drank, rose up, and went his way. So Esau despised his birthright.