C. S. Lewis said that when the author appears on the stage, you know the play is over. This is how he understands the doctrine of the Second Coming of our Lord. It means that he who has begun a good work will bring it to the best conclusion of which he is capable. After all, no one has ever claimed that this planet earth was intended to exist forever. In what is called by scientists “the second law of thermodynamics,” it is clearly predicted that the energy supply of this planet will eventually come to an end, which means that a conclusion of life as we know it here is inevitable. The concept of the Second Coming merely affirms that such a conclusion will be purposeful. The drama of history is not going to just fizzle out or end in a whimper! It is going to come to the kind of climax that he who conceived the drama wants for it.
Gary L. Carver and Tom M. Garrision, Sermons for Sundays in Advent, Christmas, and Epiphany: Building a Victorious Life, CSS Publishing Company