Undoubtedly such an outlook upon the fluid nature of the Christian movement will demand readjustment in the religious thinking of many people. They miss the old ideas about revelation. This new progressiveness seems to them to be merely the story of man's discovery, finding God, here a little and there a little, as he has found the truths of astronomy. But God's revelation of himself is just as real when it is conceived in progressive as when it is conceived in static terms. Men once thought of God's creation of the world in terms of fiat—it was done on the instant; and when evolution was propounded men cried that the progressive method shut God out. We see now how false that fear was. The creative activity of God never was so nobly conceived as it has been since we have known the story of his slow unfolding of the universe. We have a grander picture in our minds than even the psalmist had, when we say after him, "The heavens declare the glory of God." So men who have been accustomed to think of revelation in static terms, now that the long leisureliness of man's developing spiritual insight is apparent, fear that this does away with revelation. But in God's unfolding education of his people recorded in the Scriptures revelation is at its noblest. No man ever found God except when God was seeking to be found. Discovery is the under side of the process; the upper side is revelation.
Indeed, this conception of progressive revelation does not shut out finality. In scientific thought, which continually moves and grows, expands and changes, truths are discovered once for all. The work of Copernicus is in a real sense final. This earth does move; it is not stationary; and the universe is not geocentric. That discovery is final. Many developments start from that, but the truth itself is settled once for all. So, in the spiritual history of man, final revelations come. They will not have to be made over again and they will not have to be given up. Progress does not shut out finality; it only makes each new finality a point of departure for a new adventure, not a terminus ad quem for a conclusive stop. That God was in Christ reconciling the world unto himself is for the Christian a finality, but, from the day the first disciples saw its truth until now, the intellectual formulations in which it has been set and the mental categories by which it has been interpreted have changed with the changes of each age's thought.
While at first, then, a progressive Christianity may seem to plunge us into unsettlement, the more one studies it the less he would wish it otherwise. Who would accept a snapshot taken at any point on the road of Christian development as the final and perfect form of Christianity? Robert Louis Stevenson has drawn for us a picture of a man trying with cords and pegs to stake out the shadow of an oak tree, expecting that when he had marked its boundaries the shadow would stay within the limits of the pegs. Yet all the while the mighty globe was turning around in space. He could not keep a tree's shadow static on a moving earth. Nevertheless, multitudes of people in their endeavour to build up an infallibly settled creed have tried just such a hopeless task. They forget that while a revelation from God might conceivably be final and complete, religion deals with a revelation of God. God, the infinite and eternal, from everlasting to everlasting, the source and crown and destiny of all the universe—shall a man whose days are as grass rise up to say that he has made a statement about him which will not need to be revised? Rather, our prayer should be that the thought of God, the meaning of God, the glory of God, the plans and purpose of God may expand in our comprehension until we, who now see in a mirror, darkly, may see face to face. "Le Dieu défini est le Dieu fini."
This mistaken endeavour, in the interest of stability, to make a vital movement static is not confined to religion. Those of us who love Wagner remember the lesson of Die Meistersinger. Down in Nuremberg they had standardized and conventionalized music. They had set it down in rules and men like Beckmesser could not imagine that there was any music permissible outside the regulations. Then came Walter von Stolzing. Music to him was not a conventionality but a passion—not a rule, but a life—and, when he sang, his melodies reached heights of beauty that Beckmesser's rules did not provide for. It was Walter von Stolzing who sang the Prize Song, and as the hearts of the people were stirred in answer to its spontaneous melody, until all the population of Nuremberg were singing its accumulating harmonies, poor Beckmesser on his blackboard jotted down the rules which were being broken. Beckmesser represents a static conception of life which endeavours to freeze progress at a given point and call it infallible. But Beckmesser is wrong. You cannot take things like music and religion and set them down in final rules and regulations. They are life, and you have to let them grow and flower and expand and reveal evermore the latent splendour at their heart.
V
Obviously, the point where this progressive conception of Christianity comes into conflict with many widely accepted ideas is the abandonment which it involves of an external and inerrant authority in matters of religion. The marvel is that that idea of authority, which is one of the historic curses of religion, should be regarded by so many as one of the vital necessities of the faith. The fact is that religion by its very nature is one of the realms to which external authority is least applicable. In science people commonly suppose that they do not take truth on any one's authority; they prove it. In business they do not accept methods on authority; they work them out. In statesmanship they no longer believe in the divine right of kings nor do they accept infallible dicta handed down from above. But they think that religion is delivered to them by authority and that they believe what they do believe because a divine Church or a divine Book or a divine Man told them.
In this common mode of thinking, popular ideas have the truth turned upside down. The fact is that science, not religion, is the realm where most of all we use external authority. They tell us that there are millions of solar systems scattered through the fields of space. Is that true? How do we know? We never counted them. We know only what the authorities say. They tell us that the next great problem in science is breaking up the atom to discover the incalculable resources of power there waiting to be harnessed by our skill. Is that true? Most of us do not understand what an atom is, and what it means to break one up passes the farthest reach of our imaginations; all we know is what the authorities say. They tell us that electricity is a mode of motion in ether. Is that true? Most of us have no first hand knowledge about electricity. The motorman calls it "juice" and that means as much to us as to call it a mode of motion in ether; we must rely on the authorities. They tell us that sometime we are going to talk through wireless telephones across thousands of miles, so that no man need ever be out of vocal communication with his family and friends. Is that true? It seems to us an incredible miracle, but we suppose that it is so, as the authorities say. In a word, the idea that we do not use authority in science is absurd. Science is precisely the place where nine hundred and ninety-nine men out of a thousand use authority the most. The chemistry, biology, geology, astronomy which the authorities teach is the only science which most of us possess.
There is another realm, however, where we never think of taking such an attitude. They tell us that friendship is beautiful. Is that true? Would we ever think of saying that we do not know, ourselves, but that we rely on the authorities? Far better to say that our experience with friendship has been unhappy and that we personally question its utility! That, at least, would have an accent of personal, original experience in it. For here we are facing a realm where we never can enter at all until we enter, each man for himself.
Two realms exist, therefore, in each of which first-hand experience is desirable, but in only one of which it is absolutely indispensable. We can live on what the authorities in physics say, but there are no proxies for the soul. Love, friendship, delight in music and in nature, parental affection—these things are like eating and breathing; no one can do them for us; we must enter the experience for ourselves. Religion, too, belongs in this last realm. The one vital thing in religion is first-hand, personal experience. Religion is the most intimate, inward, incommunicable fellowship of the human soul. In the words of Plotinus, religion is "the flight of the alone to the Alone." You never know God at all until you know him for yourself. The only God you ever will know is the God you do know for yourself.
This does not mean, of course, that there are no authorities in religion. There are authorities in everything, but the function of an authority in religion, as in every other vital realm, is not to take the place of our eyes, seeing in our stead and inerrantly declaring to us what it sees; the function of an authority is to bring to us the insight of the world's accumulated wisdom and the revelations of God's seers, and so to open our eyes that we may see, each man for himself. So an authority in literature does not say to his students: The Merchant of Venice is a great drama; you may accept my judgment on that—I know. Upon the contrary, he opens their eyes; he makes them see; he makes their hearts sensitive so that the genius which made Shylock and Portia live captivates and subdues them, until like the Samaritans they say, "Now we believe, not because of thy speaking: for we have heard for ourselves, and know." That is the only use of authority in a vital, realm. It can lead us up to the threshold of a great experience where we must enter, each man for himself, and that service to the spiritual life is the Bible's inestimable gift.