Luke 8:29

And having broken the bonds, he was driven by the demon into the desert. For having even transgressed those laws, he was led by desire to such crimes as already exceeded common custom.

But this supplication availed him little, for it was not voluntary but coerced; therefore it is added: For he was commanding the unclean spirit to go out from the man, a command which it could not resist, according to that passage of Wisdom 19: "Every …

Note, Those that are ungovernable by any other thereby show that they are under Satan's government; and this is the language of those that are so, even concerning God and Christ, their best friends, that would not either bind them from or bind them to any thing but for their own good: Let us break their bands in sunder.

For he had commanded the unclean spirit..... That had the rest of the devils under his authority, and power, to come out of the man; this he had done, either before, or just as he came up to him; See Gill on Mar 5:

The well-known narrative which we have now read, is carefully recorded by all of the first three Gospel-writers. It is a striking instance of our Lord's complete dominion over the evil prince of this world. We see the great enemy of our souls for once completely vanquished — the "strong man" foiled by One stronger than he — and the lion spoiled of his prey. Let us mark, first, in this passage — the miserable condition of those over whom the devil reigns. The picture brought before us is a frightful one.

The well-known narrative which we have now read, is carefully recorded by all of the first three Gospel-writers. It is a striking instance of our Lord's complete dominion over the evil prince of this world. We see the great enemy of our souls for once completely vanquished — the "strong man" foiled by One stronger than he — and the lion spoiled of his prey. Let us mark, first, in this passage — the miserable condition of those over whom the devil reigns. The picture brought before us is a frightful one. We are told that when our Lord arrived in the country of the Gadarenes, "He was met by a demon-possessed man from the town. For a long time this man had not worn clothes or lived in a house — but had lived in the tombs." We are also told that although he had been "bound with chains and in fetters — he broke the chains, and was driven by the devil into the wilderness." In short, the case seems to have been one of the most aggravated forms of demon possession. The unhappy sufferer was under the complete dominion of Satan — both in body and soul. As long as he continued in this state — he must have been a burden and a trouble to all around him. His mental faculties were under the control of a "legion" of demons. His bodily strength was only employed for his own injury and shame. It is difficult to conceive of a more pitiable state for mortal man to be in! Cases of bodily possession by Satan, like this, are, to say the least, very rarely met with in modern times. Yet we must not, on this account, forget that the devil is continually exercising a fearful power over many hearts and souls. He still urges many, in whose hearts he reigns, into self-dishonoring and self-destroying habits of life. He still rules many with a rod of iron. He goads them on from vice to vice, and from profligacy to profligacy.