Of all the creators and cultivators who have ever lived, Jesus was the most capable of shaping culture through his own talents and power—and yet the most culture-shaping event of his life is the result of his choice to abandon his talents and power. The resurrection shows us the pattern for culture-making in the image of God. Not power, but trust. Not independence, but dependence.
—Culture Making, p.145
We are not building the kingdom by our own efforts, no. The Kingdom remains God’s gift, new creation, sheer grace. But, as part of that grace already poured out in Jesus Christ and by the Spirit, we are building for the kingdom. I use the image of the eleventh-century stonemason, probably illiterate, working away on one or two blocks of stone according to the orders given to him. He isn’t building the Cathedral; he is building for the Cathedral. When the master mason/architect gathers up all the small pieces of stone at which people have been working away, he will put them into the great edifice which he’s had in mind all along and which he alone can build—but for which we can and must build in the present time. Note 1 Corinthians 3, the Temple-building picture, and the way it relates directly to 1 Cor 15.58: what you do in the Lord is not in vain, because of the resurrection.
I have absolutely no idea how it might be that a great symphony or painting, or the small act of love and gentleness shown to an elderly patient dying in hospital, or Wilberforce campaigning to end the slave trade, or the sudden generosity which makes a street beggar happy all day—how any or all of those find a place in God’s eventual kingdom. He’s the architect, not me. He has given us instructions on the little bits of stone we are meant to be carving. How he puts them together is his business.