Luke 8:30-33

Jesus demanded, “What is your name?” “Legion,” he replied, for he was filled with many demons. The demons kept begging Jesus not to send them into the bottomless pit. There happened to be a large herd of pigs feeding on the hillside nearby, and the demons begged him to let them enter into the pigs. So Jesus gave them permission. Then the demons came out of the man and entered the pigs, and the entire herd plunged down the steep hillside into the lake and drowned.