Luke 8:29-33

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 drowned.