Romans 3:20 in the King James Version
Therefore by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin.
Context
19 Now we know that whatever things the law says, it speaks to those who are under the law, that every mouth may be closed, and all the world may be brought under the judgment of God.
20 Because by the works of the law, no flesh will be justified in his sight; for through the law comes the knowledge of sin.
21 But now apart from the law, a righteousness of God has been revealed, being testified by the law and the prophets;