Thematic Bible: Jacob obtains his brother's birthright by an unjust advantage

Once Jacob cooked a thick stew, and Esau came in from the field, and he was exhausted. And Esau said to Jacob, "Give me {some of that red stuff} to gulp down, for I am exhausted!" (Therefore his name was called Edom). Then Jacob said, "Sell me your birthright {first}." read more.
And Esau said, "Look, I am going to die; now what [is] this birthright to me?" Then Jacob said, "Swear to me {first}." And he swore to him, and sold his birthright to Jacob.