Matthew 12:43 When the unclean spirit is gone out of a man, he walketh through dry places, seeking rest, and finds none. 44 Then he saith, I will return into my house from whence I came out; and when he is come, he finds it empty, swept, and garnished.
Unless Jesus sets the captives free, by evicting that unseen person in question, the human agent is in bondage, and remains in that condition until he or she is delivered from devils. Satan is busy at work in the hearts of drug addicts and prostitutes, but he is also at work in the hearts of many well-educated persons. This is certainly an inconvenient truth which most of us would prefer not to hear, but it is just the facts in the matter.
In other words, an invisible “someone” is always sitting on the throne of the heart, and it is up to us to choose who that someone will be. Case in point was the rich young ruler, who felt an unknown emptiness in his soul, who came to Jesus asking about his condition, but after Jesus told him what needed to be done, he went away sorrowful, and was never ever set free from his captor.
After he turned away from the only Person who can help in such situations he was then permitted by his captor to retain his intellect, his good habits, and his good standing among men. He did not start to curse and misbehave himself, as some other persons who may manifest visible signs of demon possession.
Matthew 12:45 Then he goes, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is worse than the first. Even so shall it be also unto this wicked generation.
May God add His blessing to the study of His word. “Good night” and God bless!