Faith Excludes Boasting

Romans 3:27-31

Where then is the glorying? It is excluded. By what manner of law? of works? Nay: but by a law of faith.

We reckon therefore that a man is justified by faith apart from the works of the law.

Or is God the God of Jews only? is he not the God of Gentiles also? Yea, of Gentiles also:

if so be that God is one, and he shall justify the circumcision by faith, and the uncircumcision through faith.

Do we then make the law of none effect through faith? God forbid: nay, we establish the law.