Génesis 25

and Jacob saith, 'Swear to me to-day:' and he sweareth to him, and selleth his birthright to Jacob;

Y dijo Jacob: Júramelo en este día. Y él le juró, y vendió á Jacob su primogenitura.

And Jacob said, Swear to me this day; and he sware unto him: and he sold his birthright unto Jacob.

Jacob said, “Swear to me first.” He swore to him. He sold his birthright to Jacob.