Mat 12:28 But if I cast out devils by the Spirit of God, then the kingdom of God is come to you.

The interesting part of this is the last phrase, "come to you."

"The spirit of God" is pneuma (wind, breath, divine inspiration) theos (God). In Christian tradition it came to mean "the Holy Spirit," the third person of the Trinity.

"The kingdom of God" is basileia (kingdom) theos (God), which is different than Christ's normal formula, "the kingdom of heaven," which in Greek can also mean the rule of the universe.

"Come to" is phthanô, which has a lot of interesting meanings. It means "to overtake" "to come or act first," "to act beforehand," To translate as "come" is to miss the major part of the meaning which is the sense of preceding or anticipating.

What Christ is telling everyone, including us, that the God's reign overtakes people, catches up to them and us without them or us being aware of it.