Mark 1:26

And when the unclean spirit had torn him - And had thrown him down in the midst, Luke 4:35, και σπαραξαν, and convulsed him. Never was there a person possessed by an unclean spirit who did not suffer a convulsion, perhaps a total ruin of nature by it. Sins of uncleanness, as the apostle intimates, are against the body; they sap the foundation of life, so that there are very few of this class, whether male or female, that live out half their days: they generally die martyrs to their lusts. When the propensities of the flesh are most violent in a person who is determined to serve God, it is often a proof that these are the last efforts of the impure spirit, who has great rages because he knows his time is but short.

And when the unclean spirit ... - Still malignant, though doomed to obey - submitting because he was obliged to, not because he chose - he exerted his last power, inflicted all the pain he could, and then bowed to the Son of God and came out.

This is the nature of an evil disposition. Though compelled to obey, though prevented by the command and providence of God from doing what it "would," yet, in seeming to obey, it does all the ill it can, and makes even the appearance of obedience the occasion for increased crime and mischief.

1:26 A loud noise - For he was forbidden to speak. Christ would neither suffer those evil spirits to speak in opposition, nor yet in favour of him. He needed not their testimony, nor would encourage it, lest any should infer that he acted in concert with them.