A kingdom is a place where a king rules. The Kingdom of God is wherever God reigns over the lives of His subjects. The Kingdom of God is not visible because God is not visible. It is a spiritual kingdom, not a visible one. Jesus Christ said, “The kingdom of God is within you” (Luke 17:21).
Jesus gave us, in the Lord’s Prayer, a petition to God: “Your kingdom come. Your will be done on earth as it is in heaven” (Matthew 6:10). This prayer shows the priority Jesus gave to the Kingdom of God. Can we not say that the Kingdom of God will come on earth when the will of God is as respected here as it is in heaven, when the visible world totally reflects the invisible world? I think we can. In the Kingdom of God, everything is subject to God’s power, instantly, with no question. In the visible world, there is resistance to God’s will.
The Kingdom of God is eternal. It is the place where all Christians ultimately will dwell. At the present time, it is an invisible kingdom here in our midst. Wherever there are those who honor the king, and wherever the Spirit of the king is, there is the Kingdom of God.