Sell me this day thy birthright - What the בחרה bechorah or birthright was, has greatly divided both ancient and modern commentators. It is generally supposed that the following rights were attached to the primogeniture:

1. Authority and superiority over the rest of the family.

2. A double portion of the paternal inheritance.

3. The peculiar benediction of the father.

4. The priesthood, previous to its establishment in the family of Aaron.

Calmet controverts most of these rights, and with apparent reason, and seems to think that the double portion of the paternal inheritance was the only incontestable right which the first-born possessed; the others were such as were rather conceded to the first-born, than fixed by any law in the family. However this may be, it appears,

1. That the first-born were peculiarly consecrated to God, Exodus 22:29.

2. Were next in honor to their parents, Genesis 49:3.

3. Had a double portion of their father's goods, Deuteronomy 21:17.

4. Succeeded him in the government of the family or kingdom, 2 Chronicles 21:3.

5. Had the sole right of conducting the service of God, both at the tabernacle and temple; and hence the tribe of Levi, which was taken in lieu of the first-born, had the sole right of administration in the service of God, Numbers 8:14-18; and hence we may presume, had originally a right to the priesthood previous to the giving of the law; but however this might have been, afterwards the priesthood is never reckoned among the privileges of the first-born.

That the birthright was a matter of very great importance, there can be no room to doubt; and that it was a transferable property, the transaction here sufficiently proves.

And Jacob said, sell me this day thy birthright. Which had many privileges annexed to it, as honour and authority in the family next to parents; a double portion of inheritance; some say the exercise of priesthood, but that is questioned; the parental blessing, and especially in this the promises of the Messiah, and of inheritance of the land of Canaan, and which was typical of the heavenly inheritance: all which Rebekah knew by the divine oracle were designed for Jacob, and which no doubt she had acquainted him with, and advised him to deal with his brother about parting with his birthright as he had opportunity; and very likely they had talked together about it before in a distant manner, and Esau had shown some indifference to his right, and made no great account of it; and now, an opportunity offering to get him in the mind to part with it, he takes it, and moves for a sale of it immediately, at once, without any more delay, and even before he had his pottage; thus taking the advantage of his brother's necessity: or, sell it me "as the day" (x), let the bargain be as clear as the day, as Jarchi interprets it; let it be made in plain and full terms, that there may be no dispute about it hereafter, or any revocation of it: but the former sense seems best, as appears from Genesis 25:33, where the same way of speaking is used.

(x) "juxta hunc diem", Fagius, Drusius.

And Jacob said, Sell me this day thy birthright.

25:31 Sell me this day thy birth - right - He cannot be excused in taking advantage of Esau's necessity, yet neither can Esau be excused who is profane, Heb 12:16, because for one morsel of meat he sold his birth - right. The birth - right was typical of spiritual privileges, those of the church of the first - born: Esau was now tried how he would value those, and he shews himself sensible only of present grievances: may he but get relief against them, he cares not for his birth - right. If we look on Esau's birth - right as only a temporal advantage, what he said had something of truth in it, that our worldly enjoyments, even those we are most fond of, will stand us in no stead in a dying hour. They will not put by the stroke of death, nor ease the pangs, nor remove the sting. But being of a spiritual nature, his undervaluing it, was the greatest profaneness imaginable. It is egregious folly to part with our interest in God, and Christ, and heaven, for the riches, honours, and pleasures of this world.

[2] birthright

The "birthright" had three elements:

(1) Until the establishment of the Aaronic priesthood the head of the family exercised priestly rights.

(2) The Abrahamic family held the Edenic promise of the Satan-Bruiser Gen 3:15. --Abel, Seth, Shem, Abraham, Isaac, Esau.

(3) Esau, as the firstborn, was in the direct line of the Abrahamic promise of the Earth-Blesser Gen 12:3.

For all that was revealed, in Esau might have fulfilled those two great Messianic promises. This birthright Esau sold for a momentary fleshly gratification. Jacob's conception of the birthright at that time was, doubtless, carnal and inadequate, but his desire for it evidenced true faith.

31. Jacob said, Sell me . thy birthright-that is, the rights and privileges of the first-born, which were very important, the chief being that they were the family priests (Ex 4:22) and had a double portion of the inheritance (De 21:17).

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.