“But if it is
By the Spirit of God
That I cast out demons,
Then the kingdom of God
Has come upon you.”
εἰ δὲ ἐν Πνεύματι Θεοῦ ἐγὼ ἐκβάλλω τὰ δαιμόνια, ἄρα ἔφθασεν ἐφ’ ὑμᾶς ἡ βασιλεία τοῦ Θεοῦ.
There is a similar statement in Luke, chapter 11:20. However, Luke talked about the finger of God rather than the Spirit of God (ἐν Πνεύματι Θεοῦ). Notice that Matthew said that the Kingdom of God (ἡ βασιλεία τοῦ Θεοῦ) had come, not the Kingdom of heaven, as he said many times earlier in this work. Jesus said, via Matthew, that if he cast out the demons with the Spirit or breathe of God (εἰ δὲ ἐν Πνεύματι Θεοῦ ἐγὼ ἐκβάλλω τὰ δαιμόνια), then the kingdom of God had come or arrived for them (ἄρα ἔφθασεν ἐφ’ ὑμᾶς ἡ βασιλεία τοῦ Θεοῦ). The end times had already begun.
Eugene Finnegan Bible Project 