See how Jesus deals with illness and demons

Jesus' way of healing is straightforward and simple, yet full of authority and power. He is the Son of God. The Son of God has manifested on earth with the purpose of destroying the works of the devil (1 John 3:8b). Jesus indeed did just that.
Even a Roman centurion had greater faith in the authority and power of Jesus than the Jewish leaders and disciples then. The Roman proclaimed to Jesus a history making statement of faith in Matthews 8:8, "But only speak a word and my servant will be healed."
Jesus praised this faith, "I have not seen such great faith, not even in Israel." (Matt. 8:10) In today's church environment this statement can be rephrased to say, "I have not seen such great faith, not even in the church."
So today's assignment for all churches who cannot match the faith of the Roman centurion to read Jesus' healing ministry throughout the gospels and that of the Apostles and disciples in the typical church history (summarized as a pattern for all churches to follow) as recorded in the Acts of the Apostles.
See God, see His Son's healing and deliverance ministry and the power and authority which was evident to those who believed.
Jesus reprimanded the disciples: "Why are you so fearful, O you of little faith?" Then He arose and rebuked the winds and the sea, and there was a calm. (Matt. 8:26)
James aptly warned the believers that a man who doubts is a double-minded man and let not he suppose he will receive anything from the Lord. "Let him ask in faith with no doubting, for he who doubts is like a wave of the sea driven and tossed by the wind." (James 1:6-8)
Use your faith and word key. Don't waste it.