Mark 5:5

And always, night and day, he was in the mountains and in the tombs, crying, and cutting himself with stones

Matthew, in relating this story, speaks of two demoniacs, while Mark mentions only one, the speaker of the two, and probably also the fiercer of them. Hardly had Jesus 'stepped out of the boat when this man came running to meet Him from his home among the tombs in the neighborhood. He was a man in, that is, fully possessed by, an unclean spirit. The power of the devil and his angels is such that it always renders the person whom he gets into his dominion, spiritually unclean. Here the whole person, body, mind, and soul, was possessed of the devil. This demoniac had his dwelling-place in the tombs, probably in some of the burial-places which had been excavated or hewn into the side of the hills. His fierceness was such as to make his confinement by means of fetters and chains absolutely impossible. The piling up of the negatives emphasizes this peculiarity very strongly. All attempts to keep him in constraint by means of foot-guards and with chains had been futile. He tore the chains apart and shattered the foot-guards, whether of metal or rope, and no man was able in any way to keep him in subjection. All the methods employed in the case of wild animals availed nothing in his case. The strength of the devil and his angels in him was too great for human skill and ingenuity. He was given no rest by the tormentors living in him, but always, night and day, he was driven by them through the tombs and through the hills, making it dangerous to travel in that neighborhood. The people that caught sight of him saw that he was usually engaged in striking and mutilating himself with sharp stones, uttering at the same time fierce cries, that might well cause the stoutest heart to quail. It is a terrible thing if the devil gains ascendancy over a person, not one whit less so if this power extends over his mind and soul only than if it includes also the body.