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
Cyril of Alexandria
AD 444
This is said with good reason. For when someone who has once been freed from evils loses selfcontrol, he suffers a much worse fall than previously. For this reason “he passes through waterless places seeking rest.” This indicates how thoroughly the demons’ stratagem has taken hold of such a person—completely and absolutely. There are many reasons why such a person should have kept himself under control before it is too late. He has already suffered. He has been redeemed. The threat of a worse future punishment should be constraining. But none of these reasons has prevailed to make them better. Now remember how the evil spirit inhabited the people when they were in Egypt, how they lived according to Egyptian customs and laws and became filled with all kinds of uncleanness. When they had been delivered by Moses and had received the law as a guide calling them to the light of true divine knowledge, the wicked and unclean spirit left them. But what happens when someone who has believed now disbelieves? The demons again take up their abode there with a vengeance. For just as the Holy Spirit, when he sees a person’s heart desisting from all uncleanness, abides and dwells and rests in that one, so also the unclean spirit likes to take lodging in the souls of the lawless.