Read Luke 4:31 -37

JESUS CASTS OUT A DEMON
Jesus had recently moved to Capernaum from Nazareth. Capernaum was a thriving city with great wealth as well as great decadence. Because it was the headquarters for many Roman troops, word about Jesus could spread all over the Roman Empire.
Why was Jesus allowed to teach in the synagogue? Jesus was taking advantage of the policy of allowing visitors to teach. Itinerant rabbis were always welcome to speak to those gathered each Sabbath in the synagogues.
A man possessed by a demon was in the synagogue where Jesus was teaching. This man made his way into the place of worship and verbally abused Jesus. It is naive to think that you will be sheltered from evil in the church. Satan is happy to invade your presence wherever and whenever he can. But Jesus’ authority is much greater than Satan’s; and where Jesus is present, demons cannot stay for long.
Evil permeates our world, and it is no wonder that people are often fearful. But Jesus’ power is far greater than Satan’s. The first step toward conquering fear of evil is to recognize Jesus’ authority and power. He has overcome all evil, including Satan himself.
The people were amazed that Jesus’ authority to drive out demons – evil spirits ruled by Satan and sent to harass people, and to tempt them to sin. Demons are fallen angels who have joined Satan in rebellion against God. Demons can posses people causing them to be blind, mute, deaf, or insane. Does this mean every person that is blind, mute, or deaf demon possessed? Absolutely not! A great example of that is found in John chapter 9, where Jesus told His disciples that a man born blind was so that the “works of God should be made manifest in him.” Demons can possess anybody that leave themselves open to occult and sinful practices. Can a demon posses a Christian? If one is truly a Christian, and has invited Christ into their life, and has the Holy Spirit within them, no a demon cannot posses them. But, a demon can certainly oppress a Christian given a chance.
Jesus faced demons many times during His time on earth, and He always exerted authority over them. Not only did the evil spirit leave this man, the man was not even injured.