Romans 3:20
because, by the works of the law, no flesh will be justified in His sight; for through the law is the knowledge of sin.
Romans 7:7-11
What, then, shall we say? Is the law sin? It could not be! But I had not known sin, except through law; for I would not know even coveting, if the law did not say, "You shall not covet;"
Galatians 2:19
For I through law died to law, that I might live to God.
Galatians 3:10-13
For as many as are of works of law are under a curse; for it has been written, "Cursed is every one who continues not in all the things written in the book of the law, to do them."