Commentary on Genesis (Complete Edition). Martin Luther
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in the nature or magnitude of their bodies, but in the nature and essentiality of their creation itself; so that in this the work of God's creation is more wonderful. Hence marvellous beyond expression or thought is the fact that the rays of the sun should be dispersed through such length and breadth, with such wonderful properties of nourishment and heat to all bodies under their influence; and that, too, while the sun itself revolves with such amazing velocity.
Astronomers say also that the stars are lighted as it were by the sun so that they shine. Likewise they say that the moon borrows its light from the sun. And this is beautifully proved in an eclipse of the moon, when the earth comes between the sun and moon and the light of the sun is not transmitted to the moon. I do not deny nor reject this, but I do hold however that it is of divine power that this efficacy is added to the sun to light and illumine even the distant moon and stars with its own light; and likewise that the moon and stars are so created that they have the capacity to receive the light that is projected from the sun so far away.
Augustine sets forth two opinions about the moon in the beginning of the 12th Psalm, and in his discussions he forces an allegory upon the church, while he himself defines nothing. But I leave this; for from astronomers as from master artists we most readily learn what points are possible to be disputed in this science. I am satisfied that in these bodies so glorious and useful for our life we discern the goodness and power of God, who created such things by his Word and conserved them to the present day for our use. These are matters belonging to our calling or profession; that is, they are theological themes, and they have the efficacy to comfort and strengthen our hearts.
What is further discussed concerning the nature and attributes of these creatures, although for the most part approaching the truth and studied with profit, yet I see that the reason is by far too weak to understand these things perfectly. Therefore the greatest men of genius and learning, overwhelmed by the worthiness of these creatures, could not conclude otherwise than that they are eternal, and, as it were, gods.
Since, therefore, philosophers define a star to be a denser point within its own orbit, we come much nearer the truth when we define it to be light created by God through his Word. And it is indeed more likely that the stars are bodies round like the sun, little globes fixed to the firmament, so that each gives light by night, according to its gift and its creative functions.
V. 14b. And let them be for signs and for seasons, and for days and years.
When Moses adds above, "And let them divide the day from the night," he intimates that difference between the natural and the artificial day, so universally made by astronomers. For he had before said, "And there was evening and there was morning one day;" "were the second day," etc., where he is speaking of the natural day which consists of 24 hours, during which the first great movable body, the sun, performs his revolution from east to west. But here, when the sacred historian says, "And let them divide the day from the night" he is speaking of the artificial day, the space of time during which the sun is above the horizon.
II. These therefore are the primary offices of the sun and the moon: to be the rulers and directors of the night and the day; whereas the stars perform not these offices nor are so appointed of God. But the sun, when he rises, brings in the day without the rising or aid of the other stars. So the moon, even independently of the stars, is the ruler of the night and makes the night; for she is created by God for that very office. As to these changes of the day and the night, they are ordained for the refreshment of our bodies by sleep and rest. The sun shows his brighter light for man's work. The moon has her paler light as more adapted for repose than for work.
But what is the meaning of Moses when he says, "And let them be for signs," etc.? Lyra explains it as signifying signs of rains and storms, etc. This in an interpretation which I would not strongly oppose; though I have great doubts whether these "Lights in the firmament of heaven" do, or can, pre-signify rains, tempests, etc., with any certainty, as the poet Virgil and others represent in their writings. The gospel does indeed make a "reddened" evening a sign of "fair weather," and on the contrary a "lowering" morning a sign of "foul weather," Math. 16:2-3. With respect therefore to the common saying that the rising of the constellation of the Pleiades indicates rain and other proverbs of a similar description, I will not with great concern tear them to pieces, nor will I at once admit and confirm them, because I cannot see that they are all uniformly sure and certain.
I hold the simplest meaning of the text is that he does not speak of such inferior signs, but greater signs, such as eclipses and collisions of heavenly bodies, so that a sign is a wonder, a prophecy or miracle, by which he reveals his wrath or the misfortune of the world. If any think this explanation is too coarse, let us remember that Moses wrote for a rude people.
Here belong meteors and the rare phenomena which take place in the air, when stars are seen to fall, when halos surround the sun and moon, when the rainbow appears and similar things happen in the sky. For Moses calls the heaven the whole aqueous mass in which the stars and planets move, also the highest sphere. We speak of spheres and circles to make the explanation plainer. For the Scriptures know nothing of these and say that the moon with the sun and stars are not each in its sphere, but in the firmament of heaven, below and above are the waters. That they are signs of future events, experience teaches concerning planet collisions and meteors.
The expression "For seasons" claims particular attention. The term in the Hebrew is LEMOEDIM; and MOED signifies "a stated, fixed, certain time." Hence it is a term commonly used in the Scriptures to signify "a tabernacle of covenant;" because there certain feasts were accustomed to be held in a certain place and time according to certain rites. Therefore it is that Moses describes the sun and the moon as being created "For seasons;" not only because the seasons are ruled and evidently changed by the course of the sun; for we see that most inferior bodies are changed by the access and recess of the sun; and the quality of the air according to which our own bodies are also changed is of one kind in the winter, of another in the summer, of another in the autumn and of another in the spring; but because we observe other differences and distinctions of times and seasons in civil life, all which are derived from the motions and revolutions of these heavenly bodies. Hence at a certain time of the year men make their contracts for building houses, hire their servants and their services, and collect taxes, debts and rents, etc. All these are services rendered us and blessings bestowed upon us by the sun and the moon, that we may by their laws and revolutions divide the times and seasons for the various labors of man and enjoy many other blessings which they confer. It is by them that we divide and number our weeks, months, quarters, etc., etc.
The next expression, "For days," refers to the natural day, during which the sun performs his revolution round the earth. Our being enabled therefore to number days and also years, are blessings of the creation and are thus ordained of God. Wherefore philosophers define time to be "an enumeration of motions," which numbering could have no existence if the heavenly bodies did not move by a sure and fixed law. If they all stood fixed in a certain place without motion, numbering could have neither commencement nor regulation. And where there is no numbering of days, months, years, etc., there is no time. Hence a man in a sound sleep, being destitute of all sense of number and of all faculty of enumeration, knows not how long he sleeps.
In a like manner, though we can in a measure recollect our infancy, yet we are not conscious of the fact of having sucked the breasts of our mothers; and yet we then had natural life. The reason is that we were deficient in the sense of number and the power of annumeration. For this same reason beasts know nothing of time; just as infants have no such knowledge. The sense and faculty of number therefore prove man to be a peculiar and superior creature of God on which account we find Augustine declaring the faculty of annumeration to be an especial gift of our nature, and proving from this very gift the immortality of the soul; because man alone can calculate and understand time.
With reference to the future life, some here inquire whether the offices of these heavenly bodies are designed of God to cease. But the life to come will be without time. For the godly will enjoy an eternal day and the ungodly will have an endless night and eternal darkness.
The sun therefore makes the day, not only by his light and brightness, but by his motion, which he makes from east to west until he rises again at the end of 24 hours and thus makes another day. Wherefore astronomers make three