When the unclean spirit is gone out of a man, he walks through dry places, seeking rest; and finding none, he says, I will return unto my house from which I came out.
All Commentaries on Luke 11:24 Go To Luke 11
Cyril of Alexandria
AD 444
That the Jewish crowds fall into such thoughts concerning Christ he makes plain by saying, “When the wicked spirit has gone out from the man, it returns with seven other spirits more bitter than itself, and the last state of that man is worse than the first.” As long as they were in bondage in Egypt and lived according to the customs and laws of the Egyptians that were full of all impurity, they led polluted lives. An evil spirit dwelled in them, because it dwells in the hearts of the wicked. When in the mercy of God they had been delivered by Moses and received the law as a schoolmaster calling them to the light of the true knowledge of God, the impure and polluted spirit was driven out. Since they did not believe in Christ but rejected the Savior, the impure spirit again attacked them. He found their heart empty and devoid of all fear of God, swept and took up his dwelling in them. Commentary on Luke, Homily