Actually Paul says it best:
In Romans: When Adam sinned, sin entered the entire human race. Adam's sin brought death, so death spread to everyone, for everyone sinned. Yes, people sinned even before the law was given. And though there was no law to break, since it had not been given, they all died anyway- even though they did not disobey an explicit commandment of God, as Adam did....
God's law was given so that all people could see how sinful they were... (Romans 5:12-21)
So the good law, which was supposed to show me the way of life, instead gave me the death penalty. Sin took advantage of the law and fooled me; it took the good law and used it to make me guilty of death. But still, the law itself is holy and right and good. Romans 7:10-12
It also speaks in Romans chapter 3 about:
But some say, our sins serve a good purpose, for people will see God's goodness when he declares us sinners to be innocent. Isnt it unfair, then, for God to punish us? (That is actually the way some people talk.) Of course not! If God is not just, how is he qualified to judge the world? But, some might still argue, how can God judge and condemn me as a sinner if my dishonesty highlights his truthfulness and brings him more glory? If you follow that kind of thinking, however, you might as well say that the more we sin the better it is! Those who say such things deserve to be condemned, yet some slander me by saying this is what I preach!....
Obviously, the law applies to those whom it was given, for its purpose is to keep people from having excuses and to bring the entire world into judgment before God.... Romans 3:5-8; 19
So in my opinion, it isnt evil that reveals what is right and just, it is God's law. And it is God's law that shows us we are sinners.
(Keep reading in Romans and you will see Paul speak on Jesus, because we can never fulfill the law, it took Jesus to do this for us).
God Bless
