Gen.25.33

Jacob said, "First, swear to me." And he did it. On oath Esau traded away his rights as the firstborn.

Gen.25.33

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

Gen.25.33

Then Jacob said, "Swear to me as of this day." So he swore to him, and sold his birthright to Jacob.

Gen.25.33

So Jacob insisted, "Well then, swear to me right now that it is mine." So Esau swore an oath, thereby selling all his rights as the firstborn to his younger brother.