There's a bit in the Lord's Prayer -- "thy kingdom come, and thy will be done, on earth, even as it is in heaven" -- that adds nearly all the fuel for my theological imagination. It's that line alone that makes me sure God is interested in far more than getting me to heaven when I die.
This extended quote expresses beautifully why that is.
"What frightens and frees us simultaneously about this new and alien kingdom of God which Jesus preached and told of is the simple fact that it is God's and not our own. That is a dark menace to the complacency and contentment of those who flourish under the kingdoms of this world; a shining vision of release and new beginnings to the victims of the present order; and perhaps also a mocking rebuke to the programs, projects, and pride of those who hope to create a new order by themselves. It is tragic, therefore, that a gospel which promises justice, love and peace only by insisting that these are God's own gifts, which remain alien, foolish, and impossible except for grace alone, has continually been misconstrued and misappropriated as the goal and burden of human and Christian aspiration. Piously, or politically, we cripple ourselves with the need to bring about God's righteousness on earth, failing to hear what Jesus so vividly declares: that we need not shoulder that burden because the goal itself does not need to be accomplished. The goal is a fact, God's fact, the fact of grace and promise. No gap divides what God says from what God does."
It's from Alan Lewis, Between Cross and Resurrection: A Theology of Holy Saturday (Eerdmans 2001), p. 23.
That's a book every Christian who prays that line must read.