Romans 3:20
Because by works of the Law no flesh shall be accepted as righteous: for by the Law is the knowledge of sin.
Romans 7:7-11
What then shall we say? Is the Law sin? God forbid! But I should not have known sin, except by the Law; for I should not have known sinful desire, unless the Law had said, "Thou shalt not covet."
Galatians 2:19
For I through the Law died to the Law, that I might live to God.
Galatians 3:10-13
For as many as rely on the works of the Law are under a curse; for it is written, "Cursed is every one that continueth not in all things which are written in the book of the Law, to do them."