I. Now, as to the fact.

Beneath the poetry of my text there lie very definite conceptions of a very solemn and grave character, and these conceptions are the foundation of the ringing summons that follows, and which reposes upon a double basis--viz. for thy light is come,' and for darkness covers the earth.' There is a double element in the representation. We have a darkened earth, and a sunlit and a sunlike church; and unless we hold these two convictions, both of them, in firm grasp, and that not merely as convictions that influence our understanding, but as ever present forces acting on our emotions, our consciences, our wills, we shall not do the work which God has set us to do in the world. I need not dwell long on the former of these, or speak of that funeral pall that wraps the whole earth. Only remember that it is no darkness that came from His hand who forms the light and creates darkness, but is like the smoke that lies over our great cities--the work of many an earth-born fire, whose half-consumed foulness hides the sun from us. If we take the sulphureous and smoky pall that wraps the earth, and analyse its contents, they are these: the darkness of ignorance, the darkness of sorrow, the darkness of sin. Of ignorance; for throughout the wide regions that lie beneath that covering spread over all nations is there any certitude about God, about man, about morals, about responsibilities, about eternity? Peradventures, guesses, dreams, precious fragments of truth, twisted in with the worst of lies, noble aspirations side by side with bestial representations, these are the things on which our brethren repose, or try to repose. We do not forget that light which lighteneth every man that cometh into the world.

We do not forget, of course, that everywhere there are feelings after Him, and everywhere there are gleams and glimpses of a vanishing light, else life were impossible; but oh, dear brethren, lot us not forget either that the people sit in darkness of ignorance, which is the saddest darkness that can afflict men.

And it is a darkness of sorrow, for all the ills that flesh is heir to press, unalleviated and unsustained by any known helper in the heavens, upon millions of our fellows. They stand, as the great German poet describes himself as standing, in one of the most pathetic of his lyrics, before the marble image of the fair goddess, who has pity on her face and beauty raying from her limbs, but she has no arms. So tears fall undried. The lighthearted savage is a fiction. What a heavy gloom lies upon his past and his present, which darkens into an impenetrable mist that wraps and hides the future!

And the darkness is a darkness of sin as well as of sorrow and of ignorance. On that point I need not dwell. We all believe that all have sinned and come short of the glory of God,' and we all believe that idolatry, as we see it, and as it is wrought out, is an ally of impurity and of sin. The process is this: men make gods in their own image, and the gods make devils of the men. They that make them are like unto them, so is every one that trusteth in them.' We need no other principle than that to account for the degradation of heathenism and for the obscenities and foul transgression within the very courts of the temple.

Now, dear friends, that I may not dwell too long upon the A B C of our belief, let me urge you in one sentence to be on your guard against present-day tendencies which weaken the force of this solemn, tragical conviction as to the realities of heathendom. The new science of comparative religion has done much for us. I am not saying one word against this pursuit, or the conclusions which are drawn from it. But I pray you to remember that the underlying truths buried beneath the system that any men hold as their religion are one thing, and the practical working of that system, as we see it in daily life, is altogether another. The actual character of heathenism is not to be learned from the sacred books of all nations and the precious gleams of wisdom and feeling after the Divine which we recognise in man. As a simple matter of fact, all over the world the religion of heathen nations is a mass of obscenity, intertwined so closely with nobler thoughts that the two seem to be inseparable. Unalleviated sorrows, hideous foulnesses, a gross ignorance covering all the most important realities for men--these are the facts with which we have to grapple. Do not let us forget them.

And on the other side, remember the contrasted picture here of the sunlit and sunny church. The incarnation of Jesus Christ is the fulfilment of my text. We behold His glory, the glory as of the only begotten of the Father, full of grace and truth.' If you and I are Christians, we are bound to believe in Him as the exclusive source of certainty. We hear from Him no peradventure, but His word is, Verily, verily, I say unto you,' and on that word we rest all our knowledge of God, of duty, of man, and of the future. Instead of fears, doubt, perhapses, we have a living Christ and His rock-word. And in Him is all joy, and in Him is the cleansing from all sin. And this threefold radiance, into which the one pure light may be analysed, falls upon us. It falls all over the world as well; but they into whose hearts it has come, they whose faces are turned to it, they receive it in a sense in which the unreceptive and unresponsive darkness of the world does not. The light shineth in the darkness, and the darkness will have none of it, and so it is darkness yet. The light shineth upon us, and if by His mercy we have opened our hearts to it, then, according to the profound teaching of this context, we are not only a sun-lighted but a sunlike Church, and to us the commandment comes, Arise, shine, for thy light is come,' and has turned thy poor darkness into a sun too.

If we have the light we shall be light. That is but putting in a picturesque form the very central truth of Christianity. The last word of the gospel is transformation. We become like Him if we live near Him, and the end for which the Master became like unto us in His incarnation and passion was that we might become like to Him by the reception of His very own life unto our souls. Light makes many a surface on which it falls flash, but in the optics of earth it is the rays which are not absorbed that are reflected; but in this loftier region the illumination is not superficial but inward, and it is the light which is swallowed up within us that then comes forth from us. Christ will dwell in our hearts, and we shall be like some poor little diamond-shaped pane of glass in a cottage window which, when the sun smites it, is visible over miles of the plain. If that sun falls upon us, its image will be mirrored in our hearts and flashing in our lives. The clouds that lie over the sunset, though in themselves they be but poor, grey, and moist vapour, when smitten by its beneficent radiance, become not unworthy ministers and attendants upon its glory. So, my brethren, it may be with us, for Christ comes to be our light. Because He is in us and with us we are changed into His likeness, and the names that are most appropriate to Him He shares with us. Is He the Son ?--we are sons. Is He the Light of the world ? His own lips tell us, Ye are the light of the world.' Is He the Christ? The Psalm says: Touch not my Christs, and do My prophets no harm.' Critics have quarrelled over these last chapters of the Book of Isaiah, as to whom the servant of the Lord is; whether he is the personal or collective Israel, whether he is Christ or His Church. Let us take the lesson that He and we are so united that His office that made the union possible, wherein He was sacrificed on the Cross for us all--belongs by derivation to His servants, and that He, the Sun of Righteousness, moves in the heavens circled by many another sun.

So, dear friends, these two convictions of these two facts, the dark earth, the sunlit, sunlike church, lie at the basis of all our missionary work. If once we begin to doubt about them, if once we begin to think that men have got a good deal of light already, and can do very well without much more, or if we at all are hesitant about our possession of the light, and the certitudes and the joys that are in it, then good-bye to our missionary zeal. We shall soon begin to ask the question,' To what purpose is this waste? '--though the lips that first asked it, by the bye, did not much recommend it--and shall consider that money and resources and precious lives are too precious to be thrown away thus. But if we rightly appreciate the force of these twin principles, then we shall be ready to listen to the ringing summons.