Luke 8:27

Now although the number of those healed by Christ is different in Luke and Matthew, yet the mystery is one and the same. For as he who had a devil is the figure of the Gentile people, the two also in like manner take the figure of the Gentiles. For whereas Noah begat three sons, Shem, Ham, and Japhet; the family of Shem only was called to the possession of God, and from the other two the people of different nations were descended. He (as Luke says) had devils long time, inasmuch as the Gentile people was vexed from the deluge down to our Lord's coming. But he was naked, because the Gentiles lost the garment of their nature and virtue. Or what are the bodies of the unbelieving but kinds of tombs in which the word of God abides not?

(Hom. 28. in Matt.) But as soon as our Lord had departed from the sea, He meets with another more awful wonder. For the demoniac, like an evil slave, when he sees Him confirms his bondage, as it follows, And when he went forth to land, there met him out of the city a certain man, &c. (Hom. 28. in Matt.) Or, Luke selected from the two the one who was most savage. Hence he gives the most melancholy account of his calamity, adding, And he wore no clothes, neither abode in any house, but in the tombs. But the evil spirits visit the tombs of the dead, to instil into men that dangerous notion, that the souls of the dead become evil spirits.

(Cons. Ev. ut sup.) Whereas Matthew says, that there were two possessed, but Mark and Luke mention only one; you must understand one of them to be a more distinguished and famous person, for whom that neighbourhood was chiefly distressed, and in whose restoration they were greatly interested. Wishing to signify this, the two Evangelists thought right to mention him alone, concerning whom the report of this miracle had been most extensively noised abroad. (de Quaest. Ev. l. ii. q. 13.) He abode in no house, that is, he had no rest in his conscience; he dwelt among the tombs, because he delighted in dead works in his sins.

Now his going naked among the tombs of the dead was a mark of demoniacal wildness. But God permits some in His providence to become subject to evil spirits, that we may ascertain through them of what kind the evil spirits are towards us, in order that we may refuse to be made subject unto them, and so by the suffering of one many may be edified.