6 Don't suppose for a moment, though, that God's Word has malfunctioned in some way or other. The problem goes back a long way. From the outset, not all Israelites of the flesh were Israelites of the spirit. 7 It wasn't Abraham's sperm that gave identity here, but God's promise. Remember how it was put: "Your family will be defined by Isaac"? 8 That means that Israelite identity was never racially determined by sexual transmission, but it was God-determined by promise. 9 Remember that promise, "When I come back next year at this time, Sarah will have a son"? 10 And that's not the only time. To Rebecca, also, a promise was made that took priority over genetics. When she became pregnant by our one-of-a-kind ancestor, Isaac, 11 and her babies were still innocent in the womb - incapable of good or bad - she received a special assurance from God. What God did in this case made it perfectly plain that his purpose is not a hit-or-miss thing dependent on what we do or don't do, but a sure thing determined by his decision, flowing steadily from his initiative. 12 God told Rebecca, "The firstborn of your twins will take second place." 13 Later that was turned into a stark epigram: "I loved Jacob; I hated Esau."
Matthew Henry's Commentary on Romans 9:6-13
Commentary on Romans 9:6-13
(Read Romans 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.