He has near approached to God as a child. He has the Holy Spirit dwelling in him. He has the hope of glory. In the most awful times he can be calm, for he feels that God is with him. One reason of this wretchedness is, that sin, discovered in the heart, takes away the sense of forgiveness.
Guilt comes upon the conscience, and a dark cloud covers the soul.
I have sinned away my Saviour. Another reason is, the loathsomeness of sin. It is felt like a viper in the heart. If you do not, you will never know his joy. If you know not a believer's tears and groans, you will never know his song of victory.