4 Bible Verses about Justification Excluding Boasting

Then what becomes of boasting? It is shut out. What sort of law forbids it? A law of works? No, but a law of faith. For I conclude that a man is justified by faith, altogether apart from the deeds of the Law.

For if Abraham was justified by works, he has something to be proud of, but not before God.

The world's base things has God chosen, and the things that are not, to bring to naught the things that are;

For by grace you have been saved through faith, and that not of yourselves; it is God's gift.