And God saw the light Here God is introduced by Moses as surveying his work, that he might take pleasure in it. But he does it for our sake, to teach us that God has made nothing without a certain reason and design. And we ought not so to understand the words of Moses as if God did not know that his work was good, till it was finished. But the meaning of the passage is, that the work, such as we now see it, was approved by God. Therefore nothing remains for us, but to acquiesce in this judgment of God. And this admonition is very useful. For whereas man ought to apply all his senses to the admiring contemplation of the works of God, we see what license he really allows himself in detracting from them.

Then saw God the light that it was good. - God contemplates his work, and derives the feeling of complacence from the perception of its excellence. Here we have two other archetypal faculties displayed in God, which subsequently make their appearance in the nature of man, the understanding, and the judgment.
The perception of things external to Himself is an important fact in the relation between the Creator and the creature. It implies that the created thing is distinct from the creating Being, and external to Him. It therefore contradicts pantheism in all its forms.
The judgment is merely another branch of the apprehensive or cognitive faculty, by which we note physical and ethical relations and distinctions of things. It comes immediately into view on observing the object now called into existence. God saw "that it was good." That is good in general which fulfills the end of its being. The relation of good and evil has a place and an application in the physical world, but it ascends through all the grades of the intellectual and the moral. That form of the judgement which takes cognizance of moral distinctions is of so much importance as to have received a distinct name, - the conscience, or moral sense.
Here the moral rectitude of God is vindicated, inasmuch as the work of His power is manifestly good. This refutes the doctrine of the two principles, the one good and the other evil, which the Persian sages have devised in order to account for the presence of moral and physical evil along with the good in the present condition of our world.
Divided between the light and between the darkness. - God then separates light and darkness, by assigning to each its relative position in time and space. This no doubt refers to the vicissitudes of day and night, as we learn from the following verse:

God divided the light from the darkness - This does not imply that light and darkness are two distinct substances, seeing darkness is only the privation of light; but the words simply refer us by anticipation to the rotation of the earth round its own axis once in twenty-three hours, fifty-six minutes, and four seconds, which is the cause of the distinction between day and night, by bringing the different parts of the surface of the earth successively into and from under the solar rays; and it was probably at this moment that God gave this rotation to the earth, to produce this merciful provision of day and night. For the manner in which light is supposed to be produced, see Genesis 1:16, under the word sun.

And God saw the light, that it was good,.... Very pleasant and delightful, useful and beneficial; that is, he foresaw it would be good, of great service, as Picherellus (k) interprets it; for as yet there were no inhabitants of the earth to receive any advantage by it; see Ecclesiastes 11:7 besides, it was doubtless good to answer some present purposes, to prepare for the work of the two following days, before the great luminary was formed; as to dispel the darkness of heaven, and that which covered the deep; to rarefy, exhale, and draw up the lighter parts of the chaos, in order to form the wide extended ether, the expanded air, and the surrounding atmosphere, while the Spirit of God was agitating the waters, and separating them from the earthy parts; and which also might serve to unite and harden those which were to form the dry land, and also to warm that when it appeared, that it might bring forth grass, herbs, and fruit trees:
and God divided the light from the darkness: by which it should seem that they were mixed together, the particles of light and darkness; but "by what way is the light parted", severed and divided from darkness, is a question put to men by the Lord himself, who only can answer it, Job 38:24 he has so divided one from the other that they are not together at the same place and time; when light is in one hemisphere, darkness is in the other (l); and the one by certain constant revolutions is made to succeed the other; and by the motion of the one, the other gives way; as well as also God has divided and distinguished them by calling them by different names, as Aben Ezra, and is what next follows:
(k) In Cosmopoeiam, p. 267. (l) Milton in the place above referred to says, it was divided by the hemisphere. Paradise Lost, B. 7. l. 243, &c.

divided the light from darkness--refers to the alternation or succession of the one to the other, produced by the daily revolution of the earth round its axis.

The expression in Genesis 1:4, "God saw the light that it was good," for "God saw that the light was good," according to a frequently recurring antiptosis (cf. Genesis 6:2; Genesis 12:14; Genesis 13:10), is not an anthropomorphism at variance with enlightened thoughts of God; for man's seeing has its type in God's, and God's seeing is not a mere expression of the delight of the eye or of pleasure in His work, but is of the deepest significance to every created thing, being the seal of the perfection which God has impressed upon it, and by which its continuance before God and through God is determined. The creation of light, however, was no annihilation of darkness, no transformation of the dark material of the world into pure light, but a separation of the light from the primary matter, a separation which established and determined that interchange of light and darkness, which produces the distinction between day and night.