Observe the way the Holy Spirit has ordered His benefits: Forgiveness of your iniquities comes before the healing of your diseases. In other words, once you know that you have been forgiven of all your sins, past, present and future, the healing of all your diseases follows.
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.