4 Bible Verses about Justification Excluding Boasting

What, then, becomes of our boasting? It is excluded. By what sort of Law? A Law requiring obedience? No, a Law requiring faith. For we conclude that a man is pronounced righteous on the ground of faith, quite apart from obedience to Law.

If he was pronounced righteous as the result of obedience, then he has something to boast of. Yes, but not before God.

And God chose what the world counts poor and insignificant-- things that to it are unreal-to bring its 'realities' to nothing,

For it is by God's loving-kindness that you have been saved, through your faith. It is not due to yourselves; the gift is God's.