Mark 5:10

and crying out with a loud voice, he said, “What have I to do with you, Jesus, you Son of the Most High God? I adjure you by God, don’t torment me.”

For he said to him, “Come out of the man, you unclean spirit!”

He asked him, “What is your name?”

He said to him, “My name is Legion, for we are many.”

Now on the mountainside there was a great herd of pigs feeding.

All the demons begged him, saying, “Send us into the pigs, that we may enter into them.”

At once Jesus gave them permission. The unclean spirits came out and entered into the pigs. The herd of about two thousand rushed down the steep bank into the sea, and they were drowned in the sea.