John Chrysostom — as excerpted in the Catena Aurea on Luke 11:17-20

“(Hom. 41. in Matt.) The suspicion of the Pharisees being utterly without reason, they dared not divulge it for fear of the multitude, but pondered it in their minds. Hence it is said, But he, knowing their thoughts, said unto them, Every kingdom divided against itself will be brought to desolation.”