Romans 3:20

3:20 For no one is declared righteous before him by the works of the law, for through the law comes the knowledge of sin.

Romans 7:7-13

7:7 What shall we say then? Is the law sin? Absolutely not! Certainly, I would not have known sin except through the law. For indeed I would not have known what it means to desire something belonging to someone else if the law had not said, “Do not covet.” 7:8 But sin, seizing the opportunity through the commandment, produced in me all kinds of wrong desires. For apart from the law, sin is dead. 7:9 And I was once alive apart from the law, but with the coming of the commandment sin became alive 7:10 and I died. So I found that the very commandment that was intended to bring life brought death! 7:11 For sin, seizing the opportunity through the commandment, deceived me and through it I died. 7:12 So then, the law is holy, and the commandment is holy, righteous, and good.

7:13 Did that which is good, then, become death to me? Absolutely not! But sin, so that it would be shown to be sin, produced death in me through what is good, so that through the commandment sin would become utterly sinful.

Galatians 2:19

2:19 For through the law I died to the law so that I may live to God.

Galatians 2:1

Confirmation from the Jerusalem Apostles

2:1 Then after fourteen years I went up to Jerusalem again with Barnabas, taking Titus along too.

Galatians 3:4

3:4 Have you suffered so many things for nothing? – if indeed it was for nothing.