Casting Out Evil Spirits
This story appears in Luke, Mark and Matthew.
The Miracle of the Swine
Then they arrived at the country of the Gerasenes, which is opposite Galilee. As he stepped out on land, a man of the city who had demons met him. For a long time he had worn[b] no clothes, and he did not live in a house but in the tombs. When he saw Jesus, he fell down before him and shouted at the top of his voice, “What have you to do with me, Jesus, Son of the Most High God? I beg you, do not torment me”— for Jesus had commanded the unclean spirit to come out of the man. (For many times 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 wilds.) Jesus then asked him, “What is your name?” He said, “Legion”; for many demons had entered him. They begged him not to order them to go back into the abyss.
Now there on the hillside a large herd of swine was feeding; and the demons begged Jesus to let them enter these. So he gave them permission. Then the demons came out of the man and entered the swine, and the herd rushed down the steep bank into the lake and was drowned.
Luke 8 quoted from BibleGateway.