But, though this unity is mysterious, it is most real. Every Christian soul receives from Christ the life of Christ. There is a real implantation of a higher nature which has nothing to do with sin and is alien from death. There is a true regeneration which is supernatural, and which makes all who possess it one, in the measure of their possession, as truly as all the leaves on a tree are one because fed by the same sap, or all the members in the natural body are one, because nourished by the same blood. So the true bond of Christian unity lies in the common participation of the one Lord, and the real Christian unity is a unity of derived life.
The misery and sin of the Christian Church have been, and are, that it has sought to substitute other bonds of unity. The whole weary history of the divisions and alienations between Christians has surely sufficiently, and more than sufficiently, shown the failure of the attempts to base Christian oneness upon uniformity of opinion, or of ritual, or of purpose. The difference between the real unity, and these spurious attempts after it, is the difference between bundles of faggots, dead and held together by a cord, and a living tree lifting its multitudinous foliage towards the heavens. The bundle of faggots may be held together in some sort of imperfect union, but is no exhibition of unity. If visible churches must be based on some kind of agreement, they can never cover the same ground as that of 'the body of Christ.'
That oneness is independent of our organisations, and even of our will, since it comes from the common possession of a common life. Its enemies are not divergent opinions or forms, but the evil tempers and dispositions which impede, or prevent, the flow into each Christian soul of the uniting 'Spirit of life in Christ Jesus' which makes the many who may be gathered into separate folds one flock clustered around the one Shepherd. And if that unity be thus a fundamental fact in the Christian life and entirely apart from external organisation, the true way to increase it in each individual is, plainly, the drawing nearer to Him, and the opening of our spirits so as to receive fuller, deeper, and more continuous inflows from His own inexhaustible fullness. In the old Temple stood the seven-branched candlestick, an emblem of a formal unity; in the new the seven candlesticks are one, because Christ stands in the midst. He makes the body one; without Him it is a carcase.
II. The diversity.
'We have many members in one body, but all members have not the same office.' Life has different functions in different organs. It is light in the eye, force in the arm, music on the tongue, swiftness in the foot; so also is Christ. The higher a creature rises in the scale of life, the more are the parts differentiated. The lowest is a mere sac, which performs all the functions that the creature requires; the highest is a man with a multitude of organs, each of which is definitely limited to one office. In like manner the division of labour in society measures its advance; and in like manner in the Church there is to be the widest diversity. What the Apostle designates as 'gifts' are natural characteristics heightened by the Spirit of Christ; the effect of the common life in each ought to be the intensifying and manifestation of individuality of character. In the Christian ideal of humanity there is place for every variety of gifts. The flora of the Mountain of God yields an endless multiplicity of growths on its ascending slopes which pass through every climate. There ought to be a richer diversity in the Church than anywhere besides; that tree should 'bear twelve manner of fruits, yielding its fruit every month for the healing of the nations.' 'All flesh is not the same flesh.' 'Star differeth from star in glory.'