Then Jacob gave Esau bread and pottage of lentils; and he did eat and drink, and rose up, and went his way: thus Esau despised his birthright.

Wesley's Notes

25:34 He did eat and drink, and rise up and went his way - Without any serious reflections upon the ill bargain he had made, or any shew of regret. Thus Esau despised his birth - right - He used no means to get the bargain revoked, made no appeal to his father about it but the bargain which his necessity had made, (supposing it were so) his profaneness confirmed, and by his subsequent neglect and contempt, he put the bargain past recall.

Matthew Henry's Concise Commentary

25:29-34 We have here the bargain made between Jacob and Esau about the right, which was Esau's by birth, but Jacob's by promise. It was for a spiritual privilege; and we see Jacob's desire of the birth-right, but he sought to obtain it by crooked courses, not like his character as a plain man. He was right, that he coveted earnestly the best gifts; he was wrong, that he took advantage of his brother's need. The inheritance of their father's worldly goods did not descend to Jacob, and was not meant in this proposal. But it includeth the future possession of the land of Canaan by his children's children, and the covenant made with Abraham as to Christ the promised Seed. Believing Jacob valued these above all things; unbelieving Esau despised them. Yet although we must be of Jacob's judgment in seeking the birth-right, we ought carefully to avoid all guile, in seeking to obtain even the greatest advantages. Jacob's pottage pleased Esau's eye. Give me some of that red; for this he was called Edom, or Red. Gratifying the sensual appetite ruins thousands of precious souls. When men's hearts walk after their own eyes, Job 31:7, and when they serve their own bellies, they are sure to be punished. If we use ourselves to deny ourselves, we break the force of most temptations. It cannot be supposed that Esau was dying of hunger in Isaac's house. The words signify, I am going towards death; he seems to mean, I shall never live to inherit Canaan, or any of those future supposed blessings; and what signifies it who has them when I am dead and gone. This would be the language of profaneness, with which the apostle brands him, Heb 12:16; and this contempt of the birth-right is blamed, ver. 34. It is the greatest folly to part with our interest in God, and Christ, and heaven, for the riches, honours, and pleasures of this world; it is as bad a bargain as his who sold a birth-right for a dish of pottage. Esau ate and drank, pleased his palate, satisfied his appetite, and then carelessly rose up and went his way, without any serious thought, or any regret, about the bad bargain he had made. Thus Esau despised his birth-right. By his neglect and contempt afterwards, and by justifying himself in what he had done, he put the bargain past recall. People are ruined, not so much by doing what is amiss, as by doing it and not repenting of it.