Mat 12:43 “When an unclean spirit goes out from a man, he goes through waterless places, seeking rest, and does not find any.
Mat 12:44 Then he says, ‘I will return to my house from where I came out.’ And when he comes, he finds it unoccupied, swept, and adorned.
Mat 12:45 Then he goes and takes along with himself seven other spirits more wicked than himself, and entering in they dwell there; and the last state of that man is worse than the first. Thus it shall also be for this wicked generation.”

This story should alert us to something.