Therefore by the law, every mouth may be stopped, and all the world may become guilty before God. 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. (Romans 3:19,20) So by the law (Commandments of God), we have all sinned against God. And no one can be justified by the law, because we have already broken them, and are guilty before him.

 

I’m sure most people could look around and find someone who they think are living worse than they are, and thinking to themselves, at least am not as bad as that person. So by doing that, people try to justify themselves or feel better about how they're living their life by comparing themselves to others. And by doing that, they may look pretty good, but when we compare ourselves to God standards, we see how sinful we really are, and how we all have sinned against him.

 

A little girl was once watching a sheep eating grass and thought how white it looked against the green background. But when it began to snow she thought, "That sheep now looks dirty against the white snow!" It was the same sheep, but with a different background. When we compare ourselves to man's standard we look pretty clean, but when we compare ourselves to the pure snow-white righteousness of God's standard (His Law), we can see ourselves in truth, that we are unclean in His sight. That Law is the holy standard by which humanity will be judged on Judgment Day.

 

Perhaps you think that God is good and will, therefore, overlook your sins. But if you were guilty of terrible crimes in a civil court and said to the judge, "Judge, I am guilty but I believe that you are a good man and will therefore overlook my crimes," the judge would probably respond by saying, "You are right about one thing; I am a good man, and it's because of my goodness that I am going to see that justice is done, that you are punished for your crimes." The very thing that many are hoping will save them on Judgment Day, God's "goodness," will be the very thing that will condemn them. If God is good, He should punish murderers. liars, thieves, etc., and Hell will be their dreadful fate (Revelation 21:8)