Romans 3:19, 27

Now, we realize that everything the law says is addressed to those who are under its authority. This is for two reasons: So that every excuse will be silenced, with no boasting of innocence. And so that the entire world will be held accountable to God’s standards.

Where, then, is there room for boasting? Do our works bring God’s acceptance? Not at all! It was not our works of keeping the law but our faith in his finished work that makes us right with God.