What does Romans 4:10 mean?
Paul has asked once more whether the blessing of being forgiven for our sin, of being declared righteous by God and welcomed into His family, is only for the circumcised. Or, is it for the uncircumcised, as well? In other words, can Gentiles be saved by faith and not by following the law?To answer, Paul pointed again to what was said of Abraham in Genesis 15:6. There, we are told that Abraham believed God, and God credited that faith as righteousness. Now Paul asks and answers whether that moment happened before or after Abraham was circumcised in obedience to God's command. Of course, Abraham's expression of faith happened before circumcision.
How do we know this? Abraham is declared righteous for his faith in Genesis 15 as God was promising Abraham a son. Sometime later, Ishmael was born when Abraham was 86 years old (Genesis 16:16). Abraham was not circumcised until he was 99 years old (Genesis 17:24). So it was at least 13 years after God declared Abraham righteous before he was circumcised.
Paul's point is that Abraham's circumcision had nothing to do with Abraham being declared righteous by God for his faith. The two were not connected. So what is there to exclude the uncircumcised non-Jewish world from being justified by God for faith in Christ?