At its simplest, the kingdom of God is the result of God’s mission to rescue and renew his sin-marred creation. The kingdom of God is about Jesus our king establishing his rule and reign over all creation, defeating the human and angelic evil powers, bringing order to all, enacting justice, and being worshiped as Lord.
Tragically, there are many erroneous views of the kingdom that misrepresent the glories of God’s eternal kingdom. The kingdom is not like the cartoonish inanity that shows heaven as a white cloud upon which we will sit wearing diapers and playing harps with wings far too small to carry us anywhere fun.
The kingdom is not the naive dream of liberalism, that with more education and time sin and its effects will be so eradicated from the earth that utopia will dawn. The kingdom is not the deceptive dream of Christless spirituality where all learn to nurture the spark of divinity within themselves and live out their true good self in harmony. The kingdom is not the political dream that if we simply get the right leaders in office and defeat all the bad guys good will rule the earth.
The kingdom is both a journey and a destination, both a rescue operation in this broken world and a perfect outcome in the new earth to come, both already started and not yet finished.
From Doctrine, Chapter 13. Kingdom: God Reigns (pg. 411). Repost from Mark Driscoll on Resurgence.