Mark 5:9

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

Matthew 26:53

Think you that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?

Luke 8:30

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

Then he goes, and takes with himself seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is worse than the first. Even so shall it be also unto this wicked generation.

Mark 5:15

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