Genesis 1:8

We, however, have but one God, and but one earth too, which in the beginning God made. The Scripture, which at its very outset proposes to run through the order thereof tells us as its first information that it was created; it next proceeds to set forth what sort of earth it was. In like manner with respect to the heaven, it informs us first of its creation, “In the beginning God made the heaven:” it then goes on to introduce its arrangement; how that God both separated “the water which was below the firmament from that which was above the firmament,” and called the firmament heaven, the very thing He had created in the beginning. …

Mindful of this declaration as of a conclusive prescript, we nevertheless proceed to treat the question , “How foolish and impossible it is to be formed anew by water. In what respect, pray, has this material substance merited an office of so high dignity?” The authority, I suppose, of the liquid element has to be examined. This however, is found in abundance, and that from the very beginning. For water is one of those things which, before all the furnishing of the world, were quiescent with God in a yet unshapen state. “In the first beginning,” saith Scripture , “God made the heaven and the earth. …

8. But that heaven of heavens was for Thee, O Lord; but the earth, which Thou hast given to the sons of men, to be seen and touched, was not such as now we see and touch. For it was invisible and “without form,” and there was a deep over which there was not light; or, darkness was over the deep, that is, more than in the deep. For this deep of waters, now visible, has, even in its depths, a light suitable to its nature, perceptible in some manner unto fishes and creeping things in the bottom of it. But the entire deep was almost nothing, since hitherto it was altogether formless; yet there was then that which could be formed. For Thou, O Lord, hast made the world of a formless matter, which matter, out of nothing, Thou hast made almost nothing, out of which to make those great things which we, sons of men, wonder at. …

1. The title of this Psalm is, “A song of praise, to the sons of Korah, on the second day of the week.” Concerning this what the Lord deigneth to grant receive ye like sons of the firmament. For on the second day of the week, that is, the day after the first which we call the Lord’s day, which also is called the second week-day, was made the firmament of Heaven.…The second day of the week then we ought not to understand but of the Church of Christ: but the Church of Christ in the Saints, the Church of Christ in those who are written in Heaven, the Church of Christ in those who to this world’s temptations yield not. For they are worthy of the name of “firmament.” The Church of Christ, then, in those who are strong, of whom saith the Apostle, “We that are strong ought to bear the infirmities of the weak,” is called the firmament. Of this it is sung in this Psalm. …

10. But what is that which followeth, “Mount Sina from the face of the God of Israel”? Must there be understood “dropped;” so that what he hath called by the name of Heavens, the same he hath willed to be understood under the name of Mount Sina also; just as we said that those are called mountains, which were called Heavens? Nor in this sense ought it to move us that He saith “mountain,” not mountains, while in that place they were called “Heavens,” not Heaven: for in another Psalm also after it had been said, “The Heavens are telling forth the glory of God:” after the manner of Scripture repeating the same sense in different words, subsequently there is said, “And the firmament telleth the works of His hands.” First he said “Heavens,” not “Heaven:” and yet afterwards not “firmaments,” but “firmament.” For God called the firmament Heaven, as in Genesis hath been written. …

38. Henceforward, as if through prophecy all things had been discoursed of which now we see fulfilled, he exhorteth to the praise of Christ, and next He foretelleth His future Advent. “Kingdoms of earth, sing ye to God, psalm ye to the Lord: psalm ye to God, who hath ascended above the Heaven of Heavens to the East” ( ver. 33 ). Or, as some copies have it, “who hath ascended above the Heaven of Heaven to the East.” In these words he perceiveth not Christ, who believeth not His Resurrection and Ascension. But hath not “to the East,” which he hath added, expressed the very spot; since in the quarters of the East is where He rose again, and whence He ascended? Therefore above the Heaven of Heaven He sitteth at the right hand of the Father. …

2. The Psalm hath this title, that is, this inscription: “A Psalm of David himself, on the fourth day of the week.” This Psalm is about to teach patience in the sufferings of the righteous: it enjoineth patience against the prosperity of the wicked, and buildeth up patience. This is the drift of the whole of it, from beginning to end. Wherefore then hath it such a title, “on the fourth of the week”? The first of the week is the Lord’s day: the second, is the second week-day, which people of the world call the Moon’s day: the third, is the third weekday, which they term Mars’ day. The fourth of the Sabbaths therefore is the fourth week-day, which by Pagans is styled Mercury’s day, and also by many Christians; but I would not call it so: and I wish they would change for the better, and cease to do so; for they have a phrase of their own, which they may use. …

2. Now in that some have believed that the Psalms are divided into five books, they have been led by the fact, that so often at the end of Psalms are the words, “so be it, so be it.” But when I endeavoured to make out the principle of this division, I was not able; for neither are the five parts equal one to another, neither in quantity of contents, nor yet even in number of Psalms, so as for each to contain thirty. And if each book end with, “so be it, so be it,” we may reasonably ask, why the fifth and last book hath not the same conclusion. We however, following the authority of canonical Scripture, where it is said, “For it is written in the book of Psalms,” know that there is but one book of Psalms. And I see indeed how this can be true, and yet the other be true also, without contravening it. …

Has then the divine teaching, which abolished the godlessness of the heathen or the idols, passed over in silence, and left the race of mankind to go entirely unprovided with the knowledge of God? Not so: rather it anticipates their understanding when it says: “Hear, O Israel, the Lord thy God is one God;” and again, “Thou shalt love the Lord thy God with all thy heart and with all thy strength;” and again, “Thou shalt worship the Lord thy God, and Him only shalt thou serve, and shalt cleave to Him.” 2. But that the providence and ordering power of the Word also, over all and toward all, is attested by all inspired Scripture, this passage suffices to confirm our argument, where men who speak of God say: “Thou hast laid the foundation of the earth and it abideth. …

8. “ And God called the firmament heaven .” The nature of right belongs to another, and the firmament only shares it on account of its resemblance to heaven. We often find the visible region called heaven, on account of the density and continuity of the air within our ken, and deriving its name “heaven” from the word which means to see. It is of it that Scripture says, “The fowl of the air,” “Fowl that may fly…in the open firmament of heaven;” and, elsewhere, “They mount up to heaven.” Moses, blessing the tribe of Joseph, desires for it the fruits and the dews of heaven, of the suns of summer and the conjunctions of the moon, and blessings from the tops of the mountains and from the everlasting hills, in one word, from all which fertilises the earth. …

Since, therefore, the Scripture speaks of heaven, and heaven of heaven, and heavens of heavens, and the blessed Paul says that he was snatched away to the third heaven, we say that in the cosmogony of the universe we accept the creation of a heaven which the foreign philosophers, appropriating the views of Moses, call a starless sphere. But further, God called the firmament also heaven, which He commanded to be in the midst of the waters, setting it to divide the waters that are above the firmament from the waters that are below the firmament. And its nature, according to the divine Basilius, who is versed in the mysteries of divine Scripture, is delicate as smoke. Others, however, hold that it is watery in nature, since it is set in the midst of the waters: others say it is composed of the four elements: and lastly, others speak of it as a fifth body, distinct from the four elements.

The heaven of heaven, then, is the first heaven which is above the firmament. So here we have two heavens, for God called the firmament also Heaven. And it is customary in the divine Scripture to speak of the air also as heavens, because we see it above us. Bless Him , it says, all ye birds of the heaven , meaning of the air. For it is the air and not the heaven that is the region in which birds fly. So here we have three heavens, as the divine Apostle said. But if you should wish to look upon the seven zones as seven heavens there is no injury done to the word of truth. …