'Legion' in the Bible

And he asked him, What is thy name? And he answered, saying, My name is Legion: for we are many.

And they come to Jesus, and see him that was possessed with the devil, and had the legion, sitting, and clothed, and in his right mind: and they were afraid.

And Jesus asked him, saying, What is thy name? And he said, Legion: because many devils were entered into him.