Mark 5:9

Jesus also questioned him. "What is your name?" He said. "Legion," he replied, "for there are a host of us."

Matthew 26:53

Or do you suppose I cannot entreat my Father and He would instantly send to my help more than twelve legions of angels?

Luke 8:30

"What is your name?" Jesus asked him. "Legion," he replied--because a great number of demons had entered into him;

Matthew 12:45

Then he goes and brings back with him seven other spirits more wicked than himself, and they come in and dwell there; and in the end that man's condition becomes worse than it was at first. So will it be also with the present wicked generation."

Mark 5:15

and when they came to Jesus, they beheld the demoniac quietly seated, clothed and of sane mind--the man who had had the legion; and they were awe-stricken.

Luke 11:21-26

"Whenever a strong man, fully armed and equipped, is guarding his own castle, he enjoys peaceful possession of his property;

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

What

Luke 8:30
"What is your name?" Jesus asked him. "Legion," he replied--because a great number of demons had entered into him;
Luke 11:21
"Whenever a strong man, fully armed and equipped, is guarding his own castle, he enjoys peaceful possession of his property;

General references

Acts 19:15
"Jesus I know," the evil spirit answered, "and Paul I have heard of, but who are you?"