Then he goes, and takes 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.
All Commentaries on Matthew 12:45 Go To Matthew 12
Rabanus Maurus
AD 856
Or, the “dry places” are the hearts of the faithful, which after they have been purged from the weakness of loose thoughts, the crafty lier-in-wait tries if by any means he may fix his footsteps there; but lying from the chaste spirit, the Devil finds no resting place to his mind but in the heart of the wicked; as it follows, “and findeth none.”.
For when any one is converted to the faith, the Devil is cast out of him in Baptism, who driven thence wanders up and down through the dry places, that is, the hearts of the faithful.
And returning to his house whence he had gone out, “he findeth it empty,” of good works through slothfulness, “swept,” that is, of its old vices by Baptism, and “garnished” with feigned virtues through hypocrisy. And as he will not only have the seven vices which are the contraries of the spiritual virtues, but will hypocritically feign that he has the virtues, therefore his old lust, taking to itself seven other worse, that is, this seven-fold hypocrisy, returns to him soas to make the last state of that man worse than the former.