Christians do not reveal their heavenly citizenship by simply pining away for the blessed life to come. Rather, they show their citizenship by bringing heaven to earth. Our calling is not to sit along the sidelines and wait for the world to come. Instead, our calling is to bring heaven here, to live in light of heaven’s realities now, to show the citizens of these earthly and temporal countries that there is a far better, eternal country. In the words of C. S. Lewis, we are to point out to those who live in the Shadowlands that there is a real world to come. But we are to do more than that. We best point the way to the world to come when we offer glimpses of that world in this one. We point the way to heaven when we speak its language and live by its customs on earth.
Stephen J Nicols, Heaven on Earth