Matthew 12:45
Then it goes and brings with it seven other spirits more evil than itself, and they go in and dwell there; and the final plight of that man is worse than the first. So will it be with this wicked generation."

Matthew 26:53
Are you not aware that I can call on My Father, and He will at once put at my disposal more than twelve legions of angels?

Mark 5:8
For Jesus had already declared, "Come out of this man, you unclean spirit!"

Mark 5:10
And he begged Jesus repeatedly not to send them out of that region.

Mark 5:15
When they came to Jesus, they saw the man who had been possessed by the legion of demons sitting there, clothed and in his right mind; and they were afraid.

Luke 8:30
"What is your name?" Jesus asked. "Legion," he answered, because many demons had gone into him.