I gotta have my orange juice.

Brad Littlejohn writes the following about the objective existence of the church in history:

The most crucial and insightful work on [the question of church history] to come out of Mercersburg was Philip Schaff’s What is Church History? published in 1846. . . . At the outset, unsurprisingly, he insists on the intimate connection between ecclesiology and Church history:

In proportion, however, as the Church is thus brought into prominent and principal view, her History must also become for theologians an object of attention and inquiry. Church and History altogether, since the introduction of Christianity, are so closely united, that respect and love towards the first, may be said to be essentially the same with a proper sense of what is comprised in the other. The Christian Church is itself the greatest fact in the history of the world, by which the ancient order of life both Jewish and heathen has been overturned, and the way opened for a new course of existence altogether. Almost nothing has since occurred that can be counted great and important, which is not found to stand in nearer or more remote, friendly or hostile, connexion with the Church, and to acquire its true historical significance precisely from this relation. History, on the other hand, is the bearer of the Church; by whose means this last is made to possess a real existence, whereas, under any other form it could be nothing better than a baseless, fantastic abstraction, which for us who are ourselves the product of history, and draw from it all the vigour of our lives, would have no meaning or value whatever. (Schaff, What is Church History? 25-26)

In this quote, Schaff argues that the Church is, by its nature, visible and historical, and comes to maturity in history. Moreover, history, by its nature, is oriented by the Church. Therefore, not only is a proper understanding of Church history essential to any true idea of the nature of the Church, but it is necessary to give meaning to the lives of Christians today. The study of Church history, then, is as important as any area of doctrine, and those who neglect or abuse it endanger the project of Christian theology as a whole.

The inseparable relationship between Church and history follows directly from the Mercersburg view of the visible/invisible church distinction, discussed above. For Nevin and Schaff, the visible, historical Church is inseparable from the invisible, timeless Church—it is indeed its necessary manifestation. There is no concept of a true Church existing in a transcendent realm beyond time and space, of which the Church we see is merely some vague corollary. No, if the Church is to have reality at all, it must be a reality which actualizes itself in space and time. And of course, we will remember that this is so because the Church springs out of the Incarnation, in which God declared that His saving power must be something which was actualized in space and time. But more importantly, the Church must be historical because God has a historical plan for His creation. Creation, Fall, Redemption, Consummation—the whole order of the world’s life flows forward, first as a degeneration toward death and separation from God, then after the Incarnation and Resurrection, as an eternal regeneration towards life and union with God. God has willed neither that the glorification of mankind take place in an instant, nor that man be divorced from time and the world to be clothed with his glorified state. For it is not just man who is to be redeemed; the God-man came for the life of the world, and through His saving power in the Church, the whole world must be transformed into a new creation, to the glory of God the Father. This story of transformation is the story of History, and it is thus through history that the Church becomes the Church and accomplishes her God-given task to disciple the nations.

This idea comes out in Schaff’s fondness for the scriptural image of the Church as the “kingdom of Christ on earth.” Just as any kingdom, it has citizens, it has a history, and it accomplishes its conquests in history, until it completes those conquests and history as we know it shall cease: “The church is in part a pedagogic institution, to train men for heaven, and as such is destined to pass away in its present form, when the salvation shall be completed.” Moreover, the Church is “the continuation of the life and work of Christ upon earth.” Therefore, because it is alive, animated by the life of Christ, “the church is not to be viewed as a thing at once finished and perfect, but as a historical fact, as a human society, subject to the laws of history, to genesis, growth, development. Only the dead is done and stagnant. All created life . . . is essentially motion, process, constant change.” Again, however the distinction between ideal and actual plays a key role in this concept of development: “the church, in its idea, or viewed subjectively in Christ, in whom dwelleth all the fullness of the Godhead bodily, who is the same yesterday, to-day, and for ever, is from the first complete and unchangeable.” However, he says, we must distinguish from the idea of the Church its “actual manifestation on earth; from the objective revelation itself we must discriminate the subjective apprehension and appropriation of it in the mind of humanity at a given time.” This latter is necessarily gradual and progressive; the Church slowly grows to maturity through history. (The Mercersburg Theology and the Quest for Reformed Catholicity, 77-79)