Why is the fear of evil a sin? Examples of fearing evil: someone is afraid of Satan, demons, or of bad or evil things happening to them. We are commanded to not fear men who can physically harm us. It is a sin to disobey a commandment. Someone might answer that fearing evil is making a choice to not trust God. Do you think God is angry when someone fears evil? Revelation 21:8 tells us that the "fearful" are one of the groups of people who shall have their part in the lake which burns with fire and brimstone. Are they fearful because of guilt or are they guilty of fearing evil? Also read Matthew 10:28, Psalm 112, and 1 Peter 3:6 concerning fear.