Therefore by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin.
All Commentaries on Romans 3:20 Go To Romans 3
John Chrysostom
AD 407
Once more Paul jumps on the law but this time with restraint, for what he says is an accusation not against the law but against the negligence of the covenant people…. The law accomplished its task of disclosing sin to them, but then it was their duty to flee it. But since they did not flee it, they brought an even greater punishment on themselves, and the good deeds of the law have just provided an excuse for greater chastisement from God.