And God made two great lights,.... This was his own work which he himself did, and not by another; and may be particularly observed to express the folly of idolaters in worshipping these luminaries which were the creations of God, and were placed by him in the heaven to serve some purposes on earth beneficial to men, but not to be worshipped.
These two "great lights" are the sun and the moon; and they may well be called great, especially the former, for the diameter of the sun is reckoned to be about eight hundred thousand miles. According to Mr.
Derham its apparent diameter is computed at 822,145 English miles, its ambit at 2,582,873 miles, and its solid contents at 290,971,000,000,000,000: the lowest account makes the sun a hundred thousand times bigger than the earth; and according to Sir Isaac Newton it is 900,000 bigger.
The moon's diameter is to that of the earth is about twenty seven per cent, or 2175 miles, its surface contains fourteen hundred thousand square miles : it is called great, not on account of its corporeal quantity, for it is the least of all the planets excepting Mercury, but because of its quality, as a light, it reflecting more light upon the earth than any besides the sun.
The greater light to rule the day: not to rule men, though the heathens have worshipped it under the names of Molech and Baal, which signify king and lord, as if it was their lord and king to whom they were to pay homage; but to rule the day, to preside over it, to make it, give light in it, and continue it to its proper length; and in which it rules alone, the moon, nor any of the other planets then appearing: this is called the "greater" light, in comparison of the moon, not only with respect to its body or substance, but on account of its light, which is far greater and stronger than that of the moon; and which indeed receives its light from it, the moon being, as is generally said, an opaque body:and the lesser light to rule the night; to give light then, though in a fainter, dimmer way, by reflecting it from the sun; and it rules alone, the sun being absent from the earth, and is of great use to travellers and sailors; it is called the lesser light, in comparison of the sun.
Astronomers are of opinion, as Calmet observes, that it is about fifty two times smaller than the earth, and four thousand one hundred and fifty times smaller than the sun; but these proportions are otherwise determined by the generality of modern astronomers: however, they all agree that the moon is abundantly less than the sun; and that it is as a light, we all know.