But he, knowing their thoughts, said unto them,
Every kingdom divided against itself is brought to desolation; and a house divided against a house falls.
All Commentaries on Luke 11:17 Go To Luke 11
Cyril of Alexandria
AD 444
For the disciples of Christ were Jews, and sprung from Jews according to the flesh, and they had obtained from Christ power over unclean spirits, and delivered those who were oppressed by them in Christ's name. Seeing then that your sons subdue Satan in My name, is it not very madness tosay that I have My power from Beelzebub? you are then condemned by the faith of your children. Hence He adds, Therefore shall they be your judges.
Since then what you say bears upon it the mark of calumny, it is plain that by the Spirit of God I cast out devils. Hence He adds, But if I by the finger of God cast out devils, no doubt the kingdom of God is come upon you.
Or the Holy Spirit is called the finger of God for this reason. The Son was said to be the hand and arm of the Father, for the Father works all things by Him. As then the finger is not separate from the hard, but by nature a part of it; so the Holy Spirit is consubstantially united to the Son, and through Him the Son does all things.
And therefore it is justly said, The kingdom of God is come upon you, that is, “If I as a man cast out devils by the Spirit of God, human nature is enriched through Me, and the kingdom of God is come.”