'Evil Spirit' in the Bible

So that also upon the sick were brought from his body napkins or aprons, and diseases were removed from them, and evil spirits came out of them.

And certain of the wandering Jews, exorcists, undertook to call over them having evil spirits the name of the Lord Jesus, saying, We adjure you by Jesus whom Paul proclaims.

And the evil spirit having answered, said, Jesus I know, and Paul I know; but who are ye?

And the man leaping upon them in whom the evil spirit was, and having overpowered them, he was strong against them, so that naked and wounded they fled out of the house.