Deliverance is a one time event. When a man receives salvation by believing in the death, burial and resurrection of Jesus Christ, the person is delivered from the power of darkness & translated into the Kingdom of Christ, Colossians 1:13. However, the Man needs his life transformed by renewing his mind with God's word. He needs to feed consistently on the knowledge of who he has become in Christ, what Christ has done for him, is doing in him and through him. Romans 12:1-2. James 1:21-25. You can cast away a demon from a man & yet the man is not born, if has not confessed with his mouth and not believed that God raised Him from the dead, Romans 10:9-11. There's need for people to understand What Salvation is.