For the believer, living in fear rather than walking by faith is sin and wickedness. It is not an option for Jesus Christ.
Jesus came to save the world. Much of the sin of the world is "fear driven." Having fear is not condemned by God, for He sent His Son to remove fear from us. However, staying in that fear when you accept the Holy Spirit instead of learning to walk by faith, eventually becomes wickedness and sin. We cannot stay in our fears and not learn to actively walk on the waters of faith by Jesus Christ.
Luke 19: 20 And another came, saying, Lord, behold, here is thy pound, which I have kept laid up in a napkin:
21 For I feared thee, because thou art an austere man: thou takest up that thou layedst not down, and reapest that thou didst not sow.
22 And he saith unto him, Out of thine own mouth will I judge thee, thou wicked servant. Thou knewest that I was an austere man, taking up that I laid not down, and reaping that I did not sow: