The "Jesus Movement" revival of the 1960'9s and 1970's saw "deliverance ministries" develop where evil spirits were discerned and cast out of suffering individuals. However, some in the Body of Christ questioned its validity believing the gifts had ceased with the death of the Apostle John and deliverance ministries faded into oblivion. However, because signs of the closing days of earth's history are clear and spiritual warfare is intensifying learning its strategies is crucial for Christian growth. Thankfully there are also signs of re-emergence of the ministry of deliverance today in the 21st Century. This book outlines its principles.