John Chrysostom — as excerpted in the Catena Aurea on Matthew 9:32-35

“What can be more foolish than this speech of theirs? For it cannot be pretended that one dæmon would cast out another; for they are wont to consent to one another’s deeds, and not to be at variance among themselves. But Christ not only cast out dæmons, but healed the lepers, raised the dead, forgave sins, preached the kingdom of God, and brought men to the Father, which a dæmon neither could nor would do.”