29 Or is He the God of the Jews only? Is He not also the God of the Gentiles? Yes, of the Gentiles also,
Verse 29 is a specific application of the general principle of verse 28. The principle of grace in justification applies to the Mosaic Law as well as any other law of God’s.
Or is He the God of the Jews only? Is He not also the God of the Gentiles? Yes, of the Gentiles also,
God does not limit justification to ethnic groups, thus there is no law that can require salvation. If the Jews were the only people group to have the law, then Gentiles would not be able to come to Christ.
Chapters 2:1-3:8 argue that the logical conclusion is that both Jew and Gentile can come to Christ. There is only one God and one way of salvation, as we will see in the next verse. God is the God of the Gentiles as well as of the Jews. There is not one God for the Jew and another for the Gentile.
God did not give the Law of Moses as a means of salvation.
Jews who kept the Law of Moses were not justified before God because of it. They, as well as the Gentiles, were saved by faith. Abraham and David were saved by faith, as we will see in the next chapter. God deals with all people the same way when it comes to salvation.