Creation out of nothing was an awesome event. Imagine what the angelic spirits must have felt when the universe, material reality of which they had never imagined, was brought forth out of nothing by the command of God. The fall was an awful event, shaking the entire creation. The exodus was an amazing display of God’s power and love. The giving of the law, the wilderness provisions, the conquering of Canaan, the prosperity of the monarchy—all these acts of God in redemptive history were very great and wonderful. Each one was a very significant bend in the river of redemptive history, bringing it ever and ever closer to the ocean of God’s final kingdom. But we trivialize Christmas, the incarnation, if we treat it as just another bend on the way to the end. It is the end of redemptive history.
And I think the analogy of the river helps us see how. Picture the river as redemptive history flowing toward the ocean which is the final kingdom of God, full of glory and righteousness and peace. At the end of the river the ocean presses up into the river with its salt water. Therefore, at the mouth of the river there is a mingling of fresh water and salt water. One might say that the kingdom of God has pressed its way back up into the river of time a short way. It has surprised the travelers and taken them off guard. They can smell the salt water. They can taste the salt water. The sea gulls circle the deck. The end has come upon them. Christmas is not another bend in the river. It is the arrival of the salt water of the kingdom of God which has backed up into the river of history. With the coming of Christmas, the ocean of the age to come has reached backward up the stream of history to welcome us, to wake us up to what is coming, to lure us on into the deep. Christmas is not another bend in the river of history. It is the end of the river. Let down your dipper and taste of Jesus Christ, his birth and life and death and resurrection. Taste and see if the age to come has not arrived, if the kingdom has not come upon us. Does it not make your eyes sparkle?
But scoffers will say—they have always said—2,000 years is a long river delta! Too long to believe in. Christmas was just another bend in the river. The salty taste in the water must have been done by some chemical plant nearby. Who can imagine living in the last days for 2,000 years? To such skeptics I say, with the apostle Peter, “Do not ignore this one fact, beloved, that with the Lord one day is as a thousand years and a thousand years as one day” (2 Peter 3:8). As far as God is concerned the incarnation happened last Friday.
I want us to think of Christmas this year not as a great event in the flow of history, but as the arrival of the end of history which happened, as it were, but yesterday, and will be consummated very soon by the second appearing of Christ. Let me make one last effort to help you see it this way. Most of you probably know someone who is 90 years old or older—probably a woman. I want you to imagine 22 of these ladies standing here in front, side by side, facing you, each one still alert and able to remember her childhood and marriage and old age. And then instead of seeing them side by side as contemporaries, have them turn and face sideways so they form a queue, and imagine that each one lived just after the other. If the one on my far left were alive today, do you know when the one on my far right would have been born? At the same time Jesus was. Jesus was born just 22 ladies ago. That is not a very long time. Just 22 people between you and the incarnation. In comparison to the size of the ocean of the age to come, the mouth of the river of redemptive history is small. The delta is not long. It is short.
John Piper, Christmas as the End of History © Desiring God