These barriers have been thus frankly stated because they are very real, and while the impulse toward Christian unity now flows in increasing strength from the experiences of the great war, the movement in that direction must acquire far greater momentum before its work can be accomplished. Christian unity was never so fully before the thought of the American churches as now. Never were so many sincerely desirous of it. Never was its need so obvious as in these days when the church faces the tremendous problem of the reconstruction on a Christian basis of a shattered social order. It is a task which demands all the forces of an undivided Christianity. Yet desirable as the goal of unity is, it will never be reached save through the strenuous coöperant effort of all who long for it. That effort must be greater than any heretofore made. It must be patient and persistent and in full faith that the Master's prayer for his disciples demands their utmost endeavor. Three steps are certainly needful for effective progress towards a larger unity: There must be a clearer recognition of the things in the Christian faith which are of vital significance. The really great truths must be seen in their proper perspective. The simplicity of the Gospel must be increasingly recognized. We have too often elevated relatively subordinate convictions to an equality with the fundamentals of the faith. In this clearer perception of proportions the experiences of the religious work of the war is greatly aiding. We are seeing that in the Christian life we need not so many things as much. No less necessary is it that a spirit ready to sacrifice the important, but relatively subordinate, be developed. No denomination is called upon to sacrifice alone. If unity is to be achieved, each must feel a willingness to subordinate that which though precious by custom or antiquity or cherished possession is yet divisive. Even more imperative is it that American religious bodies know each other better. Existing side by side, laboring in the same communities, it is amazing how little real comprehension of each other's spiritual life now exists. In mutual acquaintance by common association, wherever such intercourse can be brought about, lies the corrective of much present misunderstanding that separates us. All that aids a common acquaintance is an aid to ultimate unity. The consideration just mentioned makes it probable that the most promising present step is in the direction of federal coöperation. Religious bodies that are far from willing to sink their present differences may yet work in harmony, and by working together increase that mutual understanding and thereby confidence in each other's Christian spirit which is so essential a preliminary to unity. That is what makes the Federal Council of the Churches of Christ and similar movements eminently worthy of support. They are not ends in themselves. They are means of utmost significance to a larger end.