If we are living in disobedience to God's Word, then thank God for the self- condemnation. When we reject Jesus we choose Hell instead of Heaven. Oh the pain of facing the truth. John lists two types of people who reject the truth about Jesus. The first are described by the word evil.
Evil people are hurtful in their actions, attitudes and influence.
They reject the authority of Jesus in their lives because they refuse to face the truth about the consequences of their actions. Verse twenty uses another word for evil that means being worthless and contemptible. The best example of a worthless, contemptible person is Satan. He is dedicated to theft, destruction and murder. Thus a worthless, contemptible person rejects and blasphemes God and dedicates his life to theft, destruction and murder, all worthless pursuits.