Genesis 25:27-32

When the boys grew up, Esau was an able and skilled hunter, a man of the outdoors, but Jacob was a quiet and peaceful man, living in tents. Now Isaac loved [and favored] Esau, because he enjoyed eating his game, but Rebekah loved [and favored] Jacob. Jacob had cooked [reddish-brown lentil] stew [one day], when Esau came from the field and was famished; and Esau said to Jacob, “Please, let me have a quick swallow of that red stuff there, because I am exhausted and famished.” For that reason Esau was [also] called Edom (Red). Jacob answered, “First sell me your birthright (the rights of a firstborn).” Esau said, “Look, I am about to die [if I do not eat soon]; so of what use is this birthright to me?”