The gospel is the good news of how God reconciles his rebellious image-bearers to himself by the death and resurrection of his Son. This good news properly entails transformed living that touches all our horizontal relationships, but which is never reducible to horizontal relationships. The proclamation of this gospel that has freed us and prepared us to meet our Maker is our joyous privilege and solemn responsibility. When the discharge of this mission is met with God’s blessing, it produces men and women who are ready for both this life and the next.
Thus Christian mission can never be reduced to preparing people for this life. It can never be properly Christian if all that it aims to do, if all that it accomplishes, is to effect some reforms in government, or to improve social, moral, and economic standards. I cannot imagine a church profoundly shaped by Scripture that will not want to reform government and improve social, moral, and economic standards. But if that is all the church is trying to do, if it is all that individual Christians are trying to do, they have lost their moorings. There is a primacy to preparing people to meet God which, though its horizon is eternity, will also change how people live here and now. To put the matter another way, the notion of realized eschatology is ridiculous unless it is predicated on futurist eschatology. The ethics and values of the End cannot be brought back into the present if there is no End.
D.A. Carson, The Gagging of God: Christianity Confronts Pluralism, pp. 434-435