NET
33 But Jacob said, “Swear an oath to me now.” So Esau swore an oath to him and sold his birthright to Jacob.
Darby
33 And Jacob said, Swear unto me now. And he swore unto him, and sold his birthright to Jacob.
KJV
33 And Jacob said, Swear to me this day; and he sware unto him: and he sold his birthright unto Jacob.