Romans 3:20
Therefore no flesh will be justified in his sight by works of the law, for through the law comes knowledge of sin.
Romans 7:7-11
What shall we say, then? Is the law sin? Certainly not! Indeed, I would not have known what sin was except through the law. For I would not have known what coveting really was if the law had not said, "You shall not covet."
Galatians 2:19
For through the law I died to the law, so that I might live to God.
Galatians 3:10-13
For all who rely on works of the law are under a curse; for it is written, "Cursed is everyone who does not abide by all things written in the book of the law, to do them."