Having explained so beautifully and plainly the doctrine of justification through faith alone, the apostle reverts once again to one of his running themes, namely, the fact that this Gospel is for Jew and Gentile both.  He is deeply concerned to convince all, and I think particularly his Jewish brethren, that God’s method of salvation is the same for all people, no matter who they are or where they come from.  That is why he devoted so much ink to proving that both Jew and Gentile were all under sin, and all stood in need of a salvation that was entirely of the free grace of God.  Here he comes to a question which must have troubled some of the Jews, who considered God as their God, a God in Whom the Gentiles had no portion.  But they failed to understand that the true seed of Abraham are not those who came from his loins, but those who are of the faith of Abraham.  Therefore, when Paul asks if God is the God of the Jews only, he is able to respond that yes, He is the God of the Gentiles as well.  This doubtless provoked the indignation of many of his Jewish readers, but the more thoughtful would have called to mind the many prophecies of an ingathering of the Gentiles in the latter days, and particularly that word in Isaiah 54:5, which says, “The God of the whole earth shall He be called.”

Paul’s aim in this brief aside is to show that God becomes the God of the Gentiles, and not just the Jews, through this process of saving men by the justifying righteousness of God, obtained through faith in Jesus Christ.  God’s salvation is not restricted to the nation of the Jews, but instead all flesh has seen the salvation of God, as He sends His messengers into all nations to preach the Gospel to every creature.  It is one and the same God Who saves the souls of both Jewish and Gentile believers through faith in this Gospel of grace.  So, essentially what Paul is doing here is reminding us that there are not two manners of salvation, one for the Jews and another for the Gentiles, but that both are saved only through faith in the Son of God.  This is a lesson which today many have tragically forgotten, in their zeal to build up once again the middle wall of partition between Jew and Gentile which Christ broken down by His death.  Let us never join in with them, but always and forever proclaim with boldness that in Jesus Christ alone is there salvation for sinners, no matter what may be their ethnic background or heritage.