I was doing some studying in Romans yesterday when I started reading chapter nine. DHK vehemently denies that we, the Gentiles, are of Abraham's seed. But here is what I came across in chapter nine: I speak the truth in Christ—I am not lying, my conscience confirms it through the Holy Spirit— I have great sorrow and unceasing anguish in my heart. For I could wish that I myself were cursed and cut off from Christ for the sake of my people, those of my own race, the people of Israel. Theirs is the adoption to sonship; theirs the divine glory, the covenants, the receiving of the law, the temple worship and the promises. Theirs are the patriarchs, and from them is traced the human ancestry of the Messiah, who is God over all, forever praised! Amen.[vss 1-5] Here, Paul is anguishing that many of his lineage(family) were unbelievers, and also many friends and those he used to associate with, the chief priests, the Pharisees, Saducees, &c were resting in their natural lineage traced back to Abraham. He is showing us all that they had been given, the very words of God, the covenants, temple worship, and even the promises of God. Yet, in all of this, they were still unbelievers. They had turned the office of High Priest into a political office, instead of what it was intended for, to atone for the Jews' sins by sacrificing lambs, oxen, turtledoves, and/or goats. It is not as though God’s word had failed. For not all who are descended from Israel are Israel. Nor because they are his descendants are they all Abraham’s children. On the contrary, “It is through Isaac that your offspring will be reckoned.” In other words, it is not the children by physical descent who are God’s children, but it is the children of the promise who are regarded as Abraham’s offspring. For this was how the promise was stated: “At the appointed time I will return, and Sarah will have a son.”[vss 6-9] Here Paul lays the ground work to show who the true Jews were/are. It was not through the fleshly lineage of Abraham's natural seed(Isaac), but through Abraham's Spiritual lineage(Christ), that the nations shall be blessed.[Gen. 18:18, 22:18, 26:4, & 27:29, Psa. 72:17, Isa. 61:9, Mal. 3:12 & Gal. 3:8] Sarah's son, Isaac, fathered Jacob, who fathered the twelve patriarchs, and through Judah's lineage Christ came. It was through Abraham's Spiritual Seed, Christ, that the nations shall be blessed. Then in Galatians 4 Paul tells them(a Gentile peoples, by the way): Now you, brothers and sisters, like Isaac, are children of promise. At that time the son born according to the flesh persecuted the son born by the power of the Spirit. It is the same now. But what does Scripture say? “Get rid of the slave woman and her son, for the slave woman’s son will never share in the inheritance with the free woman’s son.” Therefore, brothers and sisters, we are not children of the slave woman, but of the free woman.[vss 28-31] These Gentiles were also children of promise, the same promise that God gave to Abram, who later became Abraham. Then in chapter three of Galatians Paul states Understand, then, that those who have faith are children of Abraham. Scripture foresaw that God would justify the Gentiles by faith, and announced the gospel in advance to Abraham: “All nations will be blessed through you.” So those who rely on faith are blessed along with Abraham, the man of faith.[vss 7-9] Then he also stated He redeemed us in order that the blessing given to Abraham might come to the Gentiles through Christ Jesus, so that by faith we might receive the promise of the Spirit.[vs 14] And this chapter three is closed about by Paul's statement So in Christ Jesus you are all children of God through faith, for all of you who were baptized into Christ have clothed yourselves with Christ. There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus. If you belong to Christ, then you are Abraham’s seed, and heirs according to the promise.[vss 26-29] So we, both believing Jews and Gentiles make up the true Jews.