God hath spoken in His Son Hebrews 1 1-3

In these few words are set forth the relation in which the two dispensations stand to one another, the light in which the revelation as a whole is to be regarded. No words can more strongly lay down a principle which was for long regarded with suspicion. That revelation was given by degrees. This truth is necessary in order to prove the necessity or even the allowableness of Christianity; the incompleteness of the first covenant must be admitted ere the reason for the existence of the second could be perceived. God had undoubtedly spoken, but how had He spoken? He had spoken at sundry times and in divers manners.

1. At sundry times, or rather, by divers portions. It was by degrees — fragmentarily — one truth at one time. another at another. And the degree in which God was known, in which He had been manifested to successive generations, was clearly not the same in all. There might be faith, there might be obedience in all ages to Him who was invisible; but unquestionably, though the men of one generation might not be better than the men of another — though,, unfortunately, in all sin and unbelief had prevailed, yet who could not see that, as time went on, there were new truths insisted on, new discoveries made as to His holiness and His spirituality; that while it was the same eternal One whom men served or dishonoured, the way in which His will revealed itself varied from age to age; that the knowledge of David or of Jeremiah was different from the knowledge of Noah or of Abraham? This difference — this evolution, we might almost call it — lies upon the surface of the Old Testament. The history which is recorded there is, as has frequently been pointed out, like the biography of an individual life. It narrates so palpably the childhood, the youth, the manhood of a race; the education in Divine things, the development of spiritual truth. There were times when there were no Scriptures and no solemn ceremonies; there were times when men observed the complicated ritual of the law; there were times when men worshipped amid the splendours of the Temple; there were days when in exile they could not sing the Lord's song in a strange land. Thus gradually, thus at different times, as they were able to bear it, they heard God speaking.

2. And varied as were the times in which He had spoken to men, equally varied were the modes which He had employed to make them listen. How diversified was that volume in which they thought they had eternal life. By what different means were its lessons conveyed: by commandments and by promises, by similitudes and by symbols, by prophecy and by visions. History, psalms, proverbs, poetry, philosophy, all were in turn employed; the heart, the mind, the imagination were in turn appealed to. How different also from one another were those to whom the Word of the Lord came. But amid all the variety there was unity, amid all the diversity of means there was oneness of end and aim. There was progress, there was order. The whole revelation pointed onward, confessed itself imperfect and shadowy, placed its completion and glory in the future, could not be realised until what it showed forth in figure and under a veil should be fully manifested. "Consciously or unconsciously," as has been said by Dean Stanley. "the character and writings of the rest of the Bible fall into their relative places around the gospel history, as surely as in that history itself the soldiers, priests, disciples, Jews, and Romans de, ire their interest and significance from being grouped round the central figure, and round the Cross on Calvary."

3. God hath spoken in His Son, the brightness, the effulgence, the shining-forth of His glory, the express image of His Person, the impress of His substance, the essence of the Divine Being, the revelation of the very heart of God. In Him has been seen the embodiment of the Eternal Power by which the worlds were made. In Him has been unveiled the Eternal Love by which all things are preserved and sustained. In His sacrifice has been seen that offering of Himself through the Eternal Spirit without spot, to God, which alone can purify and reconcile a guilty world. In His exaltation to the right hand of God is seen the completion of the Divine purpose, the final triumph of the kingdom of heaven, our own deliverance from sin and faultless appearance before the throne, the gathering together in one of all things in Christ, both which are in heaven and which are on earth.

(P. M. Muir.)