The earth, and all the planets, and all the solid matter of the universe, are controlled, as you know, by the force of attraction. We are kept in our place in the world, in going round the sun, by two forces, the one called centripetal, which draws us toward the sun, and the other called centrifugal, which is generally illustrated by the tendency of drops of water on a trundled mop to fly off at a tangent from the circle they are describing.
Now, I believe that, in like manner, there are two forces which are ever at work upon all of us, the one which draws us toward God, and the other which drives us away from him, and we are thus kept in the circle of life; but, for my part, I shall be very glad when I can pass out of that circle, and get away from the influence of the centrifugal force. I believe that, the moment I do so—as soon as ever the attraction which draws me away from God is gone—I shall be with him in heaven; that I do not doubt. Directly one or other of the two forces which influence human life shall be exhausted, we shall have either to drift away into the far-off space, through the centrifugal force—which God forbid!—or else we shall fly at once into the central orb, by the centripetal force, and the sooner that glorious end of life comes, the better will it be for us. With Augustine, I would say, "All things are drawn to their own center. Be thou the Center of my heart, O God, my Light, my only Love!"
The sun himself is an enormous body; he has been measured, but I think I will not burden you with the figures, since they will convey to you no adequate idea of his actual size. Suffice it to say that, if the earth and the moon were put inside the sun, there would be abundance of room for them to go on revolving in their orbits just as they are now doing; and there would be no fear of their knocking against that external crust of the sun which would represent to them the heavens.
It takes about eight minutes for light to reach us from the sun. We may judge of the pace at which that light comes when we reflect that a cannon-ball, rushing with the swiftest possible velocity, would take seven years to get there, and that a train, traveling at the rate of thirty miles an hour, and never stopping for refreshments, would require more than three hundred and fifty years before it would reach the terminus. You may thus form some slight idea of the distance that we are from the sun; and this, I think, furnishes us with a good illustration of faith. There is no man who can know, except by faith, that the sun exists. That he did exist eight minutes ago, I know, for here is a ray of light that has just come from him, and told me that; but I cannot be sure that he is existing at this moment. There are some of the fixed stars, that are at such a vast distance from the earth, that a ray of light from them takes hundreds of years to reach us; and, for aught we know, they may have been extinct long ago. Yet we still put them down in our chart of the heavens, and we can only keep them there by faith, for as, "through faith we understand that the worlds were framed by the Word of God," so it is only by faith that we can know that any of them now exist. When we come to examine the matter closely, we find that our eyesight, and all our faculties and senses, are not sufficient to give us positive conviction with regard to these heavenly bodies; and therefore we still have to exercise faith; so is it to a high degree in spiritual affairs, we walk by faith, not by sight.
That the sun has spots upon his face, is a fact which everybody notices. Just so; and if you are suns, and are never so bright, yet if you have any spots upon you, you will find that people will be very quick to notice them, and to call attention to them. There is often much more talk about the sun's spots than there is about his luminous surface; and, after the same fashion, more will be said about any spots and imperfections that men may discover in our character than about any excellences that they may see in us. It was for some time asserted that there were no spots or specks whatever on the sun. Many astronomers, with the aid of the telescope, as well as without it, discovered these blemishes and patches on the face of the sun; but they were assured by men who ought to have known—namely, by the reverend fathers of the church, that it was impossible that there could be anything of the kind. The book I have previously quoted says: "Upon Scheiner, a German Jesuit, reporting the evidence of his senses to his provincial superior, the latter positively refused to believe him. 'I have read,' said he, 'Aristotle's writings from end to end many times, and I can assure you that I have nowhere found in them anything similar to what you mention. Go, my son, and tranquilize yourself: be assured that what you take for spots in the sun are the faults of your glasses, or of your eyes.'" So, brethren, we know the force of bigotry, and how men will not see what is perfectly plain to us, and how, even when facts are brought before them, they cannot be made to believe in them, but will attribute them to anything but that which is the real truth. I am afraid that the Word of God itself has often been treated just in that way. Truths that are positively and plainly revealed there are stoutly denied, because they do not happen to fit in with the preconceived theories of unbelievers.
There have been a great many attempts to explain what the spots upon the sun really are. One theory is, that the solar orb is surrounded by a luminous atmosphere, and that the spots are open spaces in that atmosphere through which we see the solid surface of the sun. I cannot see any reason why that theory should not be the truth; and, if it be so, it seems to me to explain the first chapter of Genesis, where we are told that God created the light on the first day, though he did not make the sun until the fourth day. Did he not make the light first, and then take the sun, which otherwise might have been a dark world, and put the light on it as a luminous atmosphere? The two things certainly might very well fit in with each other; and if these spots are really openings in the luminous atmosphere through which we see the dark surface of the sun, they are admirable illustrations of the spots that men see in us. We are clothed with holiness as with a garment of light; but every now and then there is a rift through which observers can see down into the dark body of natural depravity that still is in the very best of us.
It is a dangerous thing to look at the sun with unprotected eyes. Some have ventured to look at it with glasses that have no coloring in them, and they have been struck blind. There have been several instances of persons who have inadvertently neglected to use a proper kind of glass before turning the telescope to the sun, and so have been blinded. This is an illustration of our need of a Mediator, and of how necessary it is to see God through the medium of Christ Jesus our Lord; else might the excessive glory of the Deity utterly destroy the faculty of seeing God at all.
The effect of the sun upon the earth, I shall not dwell upon now, as that may rather concern another branch of science than astronomy. It will suffice to say that living plants will sometimes grow without the sun, as you may have seen them in a dark cellar; but how blanched they are when existing under such circumstances! What must have been the pleasure with which Humboldt entered into the great subterranean cave called the Cueva del Guacharo, in the district of Caraccas! It is a cavern inhabited by nocturnal, fruit-eating birds, and this was what the great naturalist saw: "Seeds, carried in by the birds to their young, and dropped, had sprung up, producing tall, blanched, spectral stalks, covered with half-formed leaves; but it was impossible to recognize the species from the change in form, color, and aspect, which the absence of light had occasioned. The native Indians gazed upon these traces of imperfect organization with mingled curiosity and fear, as if they were pale and disfigured phantoms banished from the face of the earth."
So, brethren, think what you and I would be without the light of God's countenance. Picture a church growing, as some churches do grow, without any light from heaven, a cavern full of strange birds and blanched vegetation. What a terrible place for any one to visit! There is a cave of that sort at Rome, and there are others in various parts of the earth; but woe unto those who go to live in such dismal dens!
What a wonderful effect the light of God's countenance has upon men who have the divine life in them, but who have been living in the dark! Travelers tell us that, in the vast forests of the Amazon and the Orinoco, you may sometimes see, on a grand scale, the influence of light in the coloring of the plants when the leaf-buds are developing. One says: "Clouds and rain sometimes obscure the atmosphere for several days together, and during this time the buds expand themselves into leaves. But these leaves have a pallid hue till the sun appears, when, in a few hours of clear sky and splendid sunshine, their color is changed to a vivid green. It has been related that, during twenty days of dark dull weather, the sun not once making his appearance, the leaves were expanded to their full size, but were almost white. One forenoon the sun began to shine in full brightness, when the color of the forest changed so rapidly that its progress might be marked. By the middle of the afternoon, the whole, for many miles, presented the usual summer dress."