Genesis 25:33 And Jacob said, Swear to me this day; and he sware unto him: and he sold his birthright unto Jacob. 34 Then Jacob gave Esau bread and pottage of lentiles; and he did eat and drink, and rose up, and went his way: thus Esau despised his birthright.
[Patriarchs &Prophets pp 178>179] But while he thus esteemed eternal above temporal blessings, Jacob had not an experimental knowledge of the God whom he revered. His heart had not been renewed by divine grace. He believed that the promise concerning himself could not be fulfilled so long as Esau retained the rights of the first-born, and he constantly studied to devise some way whereby he might secure the blessing which his brother held so lightly, but which was so precious to himself. When Esau, coming home one day faint and weary from the chase, asked for the food that Jacob was preparing, the latter, with whom one thought was ever uppermost, seized upon his advantage, and offered to satisfy his brother's hunger at the price of the birthright.
“Behold, I am at the point to die,” cried the reckless, self-indulgent hunter, “and what profit shall this birthright do to me?” And for a dish of red pottage he parted with his birthright, and confirmed the transaction by an oath. A short time at most would have secured him food in his father's tents, but to satisfy the desire of the moment he carelessly bartered the glorious heritage that God Himself had promised to his fathers. His whole interest was in the present. He was ready to sacrifice the heavenly to the earthly, to exchange a future good for a momentary indulgence. “Thus Esau despised his birthright.”
In disposing of it he felt a sense of relief. Now his way was unobstructed; he could do as he liked. For this wild pleasure, miscalled freedom, how many are still selling their birthright to an inheritance pure and undefiled, eternal in the heavens!
Hebrews 12:15 Looking diligently lest any man fail of the grace of God; 16 Lest there be any fornicator, or profane person, as Esau, who for one morsel of meat sold his birthright. 17 For ye know how that afterward, when he would have inherited the blessing, he was rejected: for he found no place of repentance, though he sought it carefully with tears.
May God add His blessing to the study of His word. "Good night" and God bless!