Augustine of Hippo — as excerpted in the Catena Aurea on Luke 11:17-20

“(de cons. Ev. l. ii. c. 38.) That Luke speaks of the finger of God, where Matthew has said, the Spirit, does not take away from their agreement in sense, but it rather teaches us a lesson, that we may know what meaning to give to the finger of God, whenever we read it in the Scriptures.”