water penetrating everywhere along with the Spirit, may nourish creation. For the Spirit being one, and holding the place of light,[1] was between the water and the heaven, in order that the darkness might not in any way communicate with the heaven, which was nearer God, before God said, "Let there be light." The heaven, therefore, being like a dome-shaped covering, comprehended matter which was like a clod. And so another prophet, Isaiah by name, spoke in these words: "It is God who made the heavens as a vault, and stretched them as a tent to dwell in."[2] The command, then, of God, that is, His Word, shining as a lamp in an enclosed chamber, lit up all that was under heaven, when He had made light apart from the world.[3] And the light God called Day, and the darkness Night. Since man would not have been able to call the light Day, or the darkness Night, nor, indeed, to have given names to the other things, had not he received the nomenclature from God, who made the things themselves. In the very beginning, therefore, of the history and genesis of the world, the holy Scripture spoke not concerning this firmament [which we see], but concerning another heaven, which is to us invisible, after which this heaven which we see has been called "firmament," and to which half the water was taken up that it might serve for rains, and showers, and dews to mankind. And half the water was left on earth for rivers, and fountains, and seas. The water, then, covering all the earth, and specially its hollow places, God, through His Word, next caused the waters to be collected into one collection, and the dry land to become visible, which formerly had been invisible. The earth thus becoming visible, was yet without form. God therefore formed and adorned it[4] with all kinds of herbs, and seeds and plants.
