That is the ruling thought in Scripture about Revelation. God reveals Himself in history; and by the persistent thoroughness with which the Scriptural writers grasp this thought, the unique and effective character of the Biblical Revelation is largely accounted for. Other nations, no doubt, looked back at times upon what their gods had done for them, and those who spoke for these gods may often have claimed obedience and service from their people on the ground of past favour and under threats of its withdrawal. But earlier than any other people which has affected the higher races of mankind, Israel conceived of God as a moral power with a will and purpose which embraced mankind. Further, in the belief which appears in their earliest records, that through them the nations were to be blessed, and that in the future One was coming who would in Himself bring about the realisation of Israel's destiny, they were provided with a philosophy of history, with a conception which was fitted to draw into organic connection with itself all the various fortunes of Israel and of the nations.
Of course, at first much that was involved in their view was not present to any mind. It was the very merit of the germinal revelation made through Moses that it had in it powers of growth and expansion. In no other way could it be a true revelation of God, a revelation which should have in it the fulness, the flexibility, the aloofness from mere local and temporary peculiarities, which would secure its fitness for universal mankind. Any revelation that consists only of words, of ideas even, must, to be received, have some kind of relation to the minds that are to receive it. If the words and ideas are revealed, as they must be, at a given place and a given time, they must be in such a relation to that place and time that at some period of the world's history they will be found inadequate, needing expansion, which does not come naturally, and then they have to be laid aside as insufficient. But a revelation which consists in acts, which reveals God in intimate, age-long, constant dealings with mankind, is so many-sided, so varied, so closely moulded to the actual and universal needs of man, that it embraces all the fundamental exigencies of human life, and must always continue to cover human experience. From it men may draw off systems of doctrines, which may concentrate the revelation for a particular generation, or for a series of generations, and make it more potently active in these circumstances. But unless the system be kept constantly in touch with the revelation as given in the history, it must become inadequate, false in part, and must one day vanish away.
The revelation then in life is the only possible form for a real revelation of God; and that the writers of the Old Testament in their circumstances and in their time felt and asserted this, is in itself so very great a merit, that it is almost of itself sufficient to justify any claims they may make to special inspiration. The greatest of them saw God at work in the world, and had experience of His influence in themselves, so that they had their eyes opened to His actions as other men had not. The least of them, again, had been placed at the true point of view for estimating aright the significance of the ordinary action of the Divine Providence, and for tracing the lines of Divine action where they were to other men invisible, or at least obscure. And in the records they have left us they have been entirely true to that supremely important point of view. All they deal with in the history is the moral and spiritual effects of God's dealing; and the great interests, as the world reckons them, of war and conquest, of commerce and art, are referred to only briefly and often only in the way of allusion. To many moderns this is an offence, which they avenge by speaking contemptuously of the mental endowment of the Biblical writers as historians. On the contrary, that these should have kept their eyes fixed only upon that which concerned the religious life of their people, that they should have kept firm hold of the truth that it was there the central importance of the people lay, and that they have given us the material for the formation of that great conception of supernatural revelation by history in which God Himself moves as a factor, is a merit so great that even if it were only a brilliant fancy they might surely be pardoned for ignoring other things. But if, as is the truth, they were tracing the central stream of God's redemptive action in the world, were laying open to our view the steps by which the unapproachably lofty conception of God was built up, which their nation alone has won for the human race, then it can hardly seem a fault that nothing else appealed to them. They have given God to those who were blindly groping for Him, and they have established the standard by which all historic estimates of even modern life are ultimately to be measured.