When you believe that you are forgiven and righteous, you will be made whole!
There are many believers who are suffering from sicknesses and diseases because of guilt. Whether or not there is any real basis for their guilt and condemnation, the guilt and condemnation are still destructive. That is why the gospel is so powerful. It is the good news of God's grace and forgiveness that frees the believer from every sense of feeling dirty or condemned, and gives him the power to break free from the vicious circle of condemnation and sin.
Psalm 103:1-5
Bless the Lord, O my soul; and all that is within me, bless His holy name! Bless the Lord, O my soul, and forget not all His benefits: Who forgives all your iniquities, who heals all your diseases, who redeems your life from destruction, who crowns you with lovingkindness and tender mercies, who satisfies your mouth with good things, so that your youth is renewed like the eagle's.