The law we become conscious of sin

Romans 3:9-20
We have already made the charge that Jews and Gentiles alike are all under sin.
There is no one righteous, not even one; there is no one who understands, no one who seeks God.
Now we know that whatever the law says, it says to those who are under the law.
Therefore no one will be declared righteous in his sight by observing the law.
The law we become conscious of sin. 律法本叫人知罪。
Are the Jews any better off than other people? No. Everyone is in the grip of sin.
The law makes people know they have sinned; it makes the Jews accountable - it is powerless to put anyone right with God.
Why?
No one has right to declare he is righteous before sight of God, all are under sin; who are sinners.
No one understands God, no one who seeks God, so everyone is sinner.
The law let us become conscious of sin. It is the role of law to man.
How?
Be humble, I am a sinner either, obey God's word and trust in the Lord!