“I pray that you may prosper in all things and be in health, just as your soul prospers.”
The Saviour healed the sick with forgiveness of sins as part of the process. His teachings include both aspects of life—on earth and even thereafter.
God is concerned with the total well-being of His children. We must neither neglect nor indulge but discipline the body to be at its best for the service of the Lord.
In addition to reaching with the message of the Gospel, pray for the sick and release of the captives from their affliction as a way to glorify the Lord!