Mark 5:9

And then he asked him, "What is your name?" He replied, "My name is Legion, for we are many."

Matthew 26:53

Or do you think that I could not ask my Father, and he would even now send me more than twelve legions of angels?

Luke 8:30

Jesus asked him, "What is your name?" He said, "Legion," for many demons had entered into him.

Then he goes, and takes with himself seven other spirits more evil than he is, and they enter in and dwell there. The last state of that man becomes worse than the first. Even so will it be also to this evil generation."

Mark 5:15

They came to Jesus, and saw him who had been possessed by demons sitting, clothed, and in his right mind, even him who had the legion; and they were afraid.