Genesis 25:31-33

New American Standard Bible

³¹ But Jacob said, “^[a]First sell me your ^(A)birthright.” ³² Esau said, “Look, I am about to die; so of what use then is the birthright to me?” ³³ And Jacob said, “^[b]First swear to me”; so he swore an oath to him, and ^(B)sold his birthright to Jacob.