EXPOSITION
Day four. With this day begins the second half of the creative week, whose works have a striking correspondence with the labors of the first. Having perfected the main structural arrangements of the globe by the elimination from primeval chaos of the four fundamental elements of light, air, water, and land, the formative energy of the Divine word reverts to its initial point of departure, and, in a second series of operations, carries each of these forward to completion?봳he light by permanently settling it in the sun, the air and water by filling therewith fowl and fish, and the land by making animals and man. The first of these engaged the Divine Artificer's attention on the fourth creative day. And God said, Let there be lights (literally, places where light is, light-holders, Psalms 64:1-10 :16; ????管??琯?, LXX.; luminaria, Vulgate; spoken of lamps and candlesticks, Exodus 25:6 : Numbers 4:9, Numbers 4:16) in the firmament (literally the expanse) of the heaven. ?獵?獵? in the singular with ?斂?岺淚岺瘻 in the plural is explained by Gesenius on the ground that the predicate precedes the subject (vid. 'Gram.,' 짠147). The scientific accuracy of the language here used to describe the celestial luminaries relieves the Mosaic cosmogony of at least one supposed irreconcilable contradiction, that of representing light as having an existence independent of the sun. Equally does it dispense exegesis from the necessity of accounting for what appears a threefold creation of the heavenly bodies?봧n the beginning (Genesis 1:1), on the first day (Genesis 1:3), and again on the fourth (Genesis 1:14). The reference in the last of these verses is not to the original creation of the matter of the supra mundane spheres (Gerlach), which was performed in the beginning, nor to the first production of light, which was the specific work of day one; but to the permanent appointment of the former to be the place, or center of radiation, for the latter. The purpose for which this arrangement was designed, so far, at least, as the earth was concerned, was threefold:??
1. To divide the day from the night. Literally, between the day and the night; or, as in Genesis 1:18, to divide the light from the darkness to continue and render permanent the separation and distinction which was effected on the first day.
2. And let them be for signs, and for seasons, and for days, and years. The celestial lights were to serve??
3. And let them be for lights in the firmament of the heaven to give light upon the earth. Not to introduce light for the first time to this lower world, but to serve as a new and permanent arrangement for the distribution of the light already called into existence. And it was so. Like every other command which Elohim issued, this was in due time followed by complete realization.