The moment David accepted Jesus as his Lord and Saviour, he knew beyond any doubt that it was God's will for everyone to be healed, just as much as it was His will for everyone to be saved.  We can see this throughout the Bible and in the ministry of Jesus.

David has been ministering healing and praying for the sick for over twenty years. He believes the healing ministry of Jesus Christ needs to be revived in the local church, and offers workshops and training in these areas.  In one church service overseas, David taught the congregation that they too can pray for the sick and minister healing just as Jesus did.  The people in that meeting wholeheartedly received that message, and as they ministered to each other, many healings took place as a result.  His message is that every believer can do what Jesus did.