Genesis 25:33 YLT

³¹  and Jacob saith, 'Sell to-day thy birthright to me.'

³²  And Esau saith, 'Lo, I am going to die, and what is this to me -- birthright?'

³³  and Jacob saith, 'Swear to me to-day:' and he sweareth to him, and selleth his birthright to Jacob;

³⁴  and Jacob hath given to Esau bread and pottage of lentiles, and he eateth, and drinketh, and riseth, and goeth; and Esau despiseth the birthright.