The NT distinguishes between demonic possession and physical disease. Matthew 4:24 states that Jesus healed “all those who were afflicted, those suffering form various diseases and intense pains, the demon-possessed, the epileptics, and the paralytics” (HCSB). Thus the theory that demonic possession should be equated with epilepsy or any other neurotic ailment is weak. Some of the demons made assertions of Christ’s divinity when the disciples did not show such recognition. Mental or physical illness would not impart this type of knowledge (Mark 5:13; Luke 4:33-35; 8:29-33).
The cure for demonic possession was faith in the power of Christ. Never were magic or rituals used to deliver one from demonic possession. The exorcisms of Jesus show his power over Satan and his demons. The Beelzebul passage (Matt 12:25-29; Mark 3:23-27; Luke 11:17-22) demonstrate the presence of the kingdom of God in the present world order (Luke 11:20). The exorcism of Jesus were accomplished by the power of his speech.
He issued simple commands, such as, “Be quite, and come out of him! (Mark 1:25), or, “You mute and deaf spirit, I command you: come out of him and never enter him again!” (Mark 9:25 HCSB). The disciples were given Christ’s authority and cast out demons (Luke 10:17-20; Acts 16:18). This success led Jewish exorcists to include the names of Jesus and Paul in their rituals (Acts 19:13). Despite Christ’s authority over demons, the Gospels portray a continuing battle in the present age (Matthew 13:36-49). The final outcome of the battle is not doubt. The fate of Satan and his demonic hoard is assured (Rev 20:10)