Luke tells us of how Jesus cast demons out of a man. Interestingly, the demons immediately recognize who Jesus actually is, the Son of the Most High God.  When the man is exorcised, Jesus sends him back to his community to tell of what God has done for him through Jesus.

²⁶Then they sailed to the country of the Gerasenes, which is opposite Galilee. ²⁷When Jesus had stepped out on land, there met him a man from the city who had demons. For a long time he had worn no clothes, and he had not lived in a house but among the tombs. ²⁸When he saw Jesus, he cried out and fell down before him and said with a loud voice, “What have you to do with me, Jesus, Son of the Most High God? I beg you, do not torment me.” ²⁹For he had commanded the unclean spirit to come out of the man. (For many a time it had seized him. He was kept under guard and bound with chains and shackles, but he would break the bonds and be driven by the demon into the desert.) ³⁰Jesus then asked him, “What is your name?” And he said, “Legion,” for many demons had entered him. ³¹And they begged him not to command them to depart into the abyss. ³²Now a large herd of pigs was feeding there on the hillside, and they begged him to let them enter these. So he gave them permission. ³³Then the demons came out of the man and entered the pigs, and the herd rushed down the steep bank into the lake and were drowned.

³⁴When the herdsmen saw what had happened, they fled and told it in the city and in the country. ³⁵Then people went out to see what had happened, and they came to Jesus and found the man from whom the demons had gone, sitting at the feet of Jesus, clothed and in his right mind, and they were afraid. ³⁶And those who had seen it told them how the demon-possessed man had been healed. ³⁷Then all the people of the surrounding country of the Gerasenes asked him to depart from them, for they were seized with great fear. So he got into the boat and returned. ³⁸The man from whom the demons had gone begged that he might be with him, but Jesus sent him away, saying, ³⁹“Return to your home, and declare how much God has done for you.” And he went away, proclaiming throughout the whole city how much Jesus had done for him.