When God made Adam and Eve, no sickness was present. Sickness is a breakdown in the created order. When the body is no longer in divine order, sickness is the result. However, when the Kingdom of God manifests in a person’s body, divine healing and health is the result. Every divine healing done through the power of the Holy Spirit is a manifestation of the Kingdom of God.
It is a matter of record that many, if not most, of the healings done by Jesus were done for those who were oppressed by the devil (Acts 10:38). In reality, most sickness is caused by demons – either directly or indirectly. Because large portions of the church have been ineffective in dealing with demons, there has been a corresponding ineffectiveness in dealing with sickness in the name of Jesus. Sickness represents the kingdom of satan in a person’s body. When sickness is driven out in the name of Jesus, the Kingdom of God advances. These healings are done by the power of the Holy Spirit. The Holy Spirit moves in with his power when we really believe and operate in faith. This faith is the gift of God – it comes through the recognition of Jesus, the reality of God’s Kingdom, and through personal relationship with the Godhead.
Since physical healing is something that people can see in the natural realm, it is therefore also a sign of the Kingdom of God. It is a biblical tool for evangelism. Divine healing accompanied Jesus constantly as he preached and taught about the Kingdom. This was not only done as authentication of his Messiahship (Matthew 11:4-6), but also as a demonstration of the truth of the message of the Kingdom of God. Divine healings were also done because of the Lord’s compassion (Matthew 8:1-4), and His desire to destroy the works of the devil (1 John 3:8) and to do the will of God in all things. All these considerations relate to the message of the Kingdom of God.