It is only when one is open before God, guileless, that God deals with our sin. Go back to the pictures of storms and floods in verses 6 and 7 and let me point out four things. This occurs when the man has been forgiven. The same floods of evil and iniquity that were overwhelming him before are still there, but he is going to be safe in the midst of them. Because he is in the hand of God.
Man is kept safe.
In order that you and I should be kept from them. Because there are enemies around who would harm us. What a marvelous hiding place the Christian believer has. It is God himself. Ultimately, all fear traces back to our slavish fear of God because of sin.