And not only this - Not only is the principle of making a distinction among the natural descendants of Abraham thus settled by the promise, but it is still further seen and illustrated in the birth of the two sons of Isaac. He had shown that the principle of thus making a distinction among the posterity of Abraham was recognised in the original promise, thus proving that all the descendants of Abraham were not of course to be saved; and he now proceeds to show that the principle was recognised in the case of his posterity in the family of Isaac. And he shows that it is not according to any natural principles that the selection was made; that he not only made a distinction between Jacob and Esau, but that he did it according to his good pleasure, choosing the younger to be the object of his favor, and rejecting the older, who, according to the custom of the times, was supposed to be entitled to special honor and rights. And in order to prove that this was done according to his own pleasure, he shows that the distinction was made before they were born; before they had formed any character; and, consequently, in such a way that it could not be pretended that it was in consequence of any works which they had performed.

But when Rebecca - The wife of Isaac; see Genesis 25:21, Genesis 25:23.

And not only this - A Jew might object: "Ishmael was rejected, not by the sovereign will of God, but because he was the son of the handmaid, or bond-woman, and therefore unworthy to be the peculiar seed; but observe, this was not the only limitation of the seed of Abraham with regard to inheriting the promise, for when Rebecca was with child by that one person of Abraham's issue to whom the promise was made, namely, our father Isaac, she went to inquire of the Lord, Genesis 25:22, Genesis 25:23 : And the Lord said unto her, Two nations are in thy womb, and two manner of People shall be separated from thy bowels; and the one People shall be stronger than the other People; and the elder shall serve the younger. That is, the posterity of the younger shall be a nation much more prosperous and happy than the posterity of the elder.

And not only this,.... This instance of Ishmael and Isaac, is not the only one, proving that Abraham's natural seed, the children of the flesh, are not all children, the children of God:

but when Rebecca also had conceived by one, even by our father Isaac, "it was said unto her", Romans 9:12, being in a parenthesis, "the elder shall serve the younger". The apostle was aware, that the Jews would be ready to say, that the instance of Ishmael and Isaac was not a pertinent one; since Ishmael was not born of Sarah, the lawful wife of Abraham, but of a bondwoman, which was the reason his rejection, when Isaac was the son of promise, by the lawful wife, and that they were children of Abraham in the line of Isaac, and so children of the promise, as he was: wherefore he proceeds to mention the case of Jacob and Esau, which was not liable to any such exception; seeing they not only had the same father, but the same mother, Isaac's lawful wife; they were conceived by Rebecca at once, were in the same womb together, were twins, and if any had the preference and advantage, Esau had it, being born first; and yet a difference was made between these two by God himself, and which was notified by him to the mother of them, before either were born.

And not only so

The thought to be supplied is: Not only have we an example of the election of a son of Abraham by one woman, and a rejection of his son by another, but also of the election and rejection of the children of the same woman.

By one

Though of one father, a different destiny was divinely appointed for each of the twins. Hence only the divine disposal constitutes the true and valid succession, and not the bodily descent.

{7} And not only this; but when Rebecca also had conceived by one, even by our father Isaac;

(7) Another strong and persuasive proof taken from the example of Esau and Jacob, who were both born of the same Isaac, who was the son of promise of one mother, and were born at the same time, and not at different times as Ishmael and Isaac were: and yet nonetheless, as Esau was cast off, only Jacob was chosen: and that before their birth, that neither any goodness of Jacob's might be thought to be the cause of his election, neither any wickedness of Esau to be the cause of his casting away.

9:10 And not only this. The first argument is that the true seed are children of the promise, a spiritual seed rather than of the flesh.

But when Rebecca also had conceived, etc. The second argument, now begun, is that God has the right to reject what nation he will, including the Jews, and to choose other races if he will. This is shown by facts from history. He did exercise the right of choice when he chose Jacob as the chosen nation, instead of Esau. The facts are recited to show this.

9:10 And that God's blessing does not belong to all the descendants of Abraham, appears not only by this instance, but by that of Esau and Jacob, who was chosen to inherit the blessing, before either of them had done good or evil. The apostle mentions this to show, that neither were their ancestors accepted through any merit of their own. That the purpose of God according to election might stand - Whose purpose was, to elect or choose the promised seed. Not of works - Not for any preceding merit in him he chose. But of him that called - Of his own good pleasure who called to that privilege whom he saw good.

10-13. And not only this; but when Rebecca, &c.-It might be thought that there was a natural reason for preferring the child of Sarah, as being Abraham's true and first wife, both to the child of Hagar, Sarah's maid, and to the children of Keturah, his second wife. But there could be no such reason in the case of Rebecca, Isaac's only wife; for the choice of her son Jacob was the choice of one of two sons by the same mother and of the younger in preference to the elder, and before either of them was born, and consequently before either had done good or evil to be a ground of preference: and all to show that the sole ground of distinction lay in the unconditional choice of God-"not of works, but of Him that calleth."

9:6-13 The rejection of the Jews by the gospel dispensation, did not break God's promise to the patriarchs. The promises and threatenings shall be fulfilled. Grace does not run in the blood; nor are saving benefits always found with outward church privileges. Not only some of Abraham's seed were chosen, and others not, but God therein wrought according to the counsel of his own will. God foresaw both Esau and Jacob as born in sin, by nature children of wrath even as others. If left to themselves they would have continued in sin through life; but for wise and holy reasons, not made known to us, he purposed to change Jacob's heart, and to leave Esau to his perverseness. This instance of Esau and Jacob throws light upon the Divine conduct to the fallen race of man. The whole Scripture shows the difference between the professed Christian and the real believer. Outward privileges are bestowed on many who are not the children of God. There is, however, full encouragement to diligent use of the means of grace which God has appointed.