It is a scary thing when we are so sure of ourselves that we do not even fear the judgment of God anymore.
Some will go to glory, and some to shame.
If it is our doctrine that has done this, we should be careful, as the doctrine of the Pharisees also 'guaranteed' them salvation. "We are the sons of Abraham". If we are Christ's we must be showing forth his fruit, and doing his works.
There are two reasons why a person would fear God's judgment. 1.) The person has no intention of repenting, even though they know what they are doing is wrong and that God exist. 2.) The person believes that God is unjust, so no matter what they do God will condemn them.
The person who loves to what is right in God’s sight but knows that it is not the good that he or she does is what earn them salvation will have no fear of God’s judgment. Christians should know that they are being judged God now.