City of God, Book XI
Chapter 29.—Of the Knowledge by Which the Holy Angels Know God in His Essence, and by Which They See the Causes of His Works in the Art of the Worker, Before They See Them in the Works of the Artist.
Those holy angels come to the knowledge of God not by audible words, but by the presence to their souls of immutable truth, i.e ., of the only-begotten Word of God; and they know this Word Himself, and the Father, and their Holy Spirit, and that this Trinity is indivisible, and that the three persons of it are one substance, and that there are not three Gods but one God; and this they so know that it is better understood by them than we are by ourselves. Thus, too, they know the creature also, not in itself, but by this better way, in the wisdom of God, as if in the art by which it was created; and, consequently, they know themselves better in God than in themselves, though they have also this latter knowledge. For they were created, and are different from their Creator. In Him, therefore, they have, as it were, a noonday knowledge; in themselves, a twilight knowledge, according to our former explanations. For there is a great difference between knowing a thing in the design in conformity to which it was made, and knowing it in itself,— e.g ., the straightness of lines and correctness of figures is known in one way when mentally conceived, in another when described on paper; and justice is known in one way in the unchangeable truth, in another in the spirit of a just man. So is it with all other things,—as, the firmament between the water above and below, which was called the heaven; the gathering of the waters beneath, and the laying bare of the dry land, and the production of plants and trees; the creation of sun, moon, and stars; and of the animals out of the waters, fowls, and fish, and monsters of the deep; and of everything that walks or creeps on the earth, and of man himself, who excels all that is on the earth,—all these things are known in one way by the angels in the Word of God, in which they see the eternally abiding causes and reasons according to which they were made, and in another way in themselves: in the former, with a clearer knowledge; in the latter, with a knowledge dimmer, and rather of the bare works than of the design. Yet, when these works are referred to the praise and adoration of the Creator Himself, it is as if morning dawned in the minds of those who contemplate them.
Chapter 30.—Of the Perfection of the Number Six, Which is the First of the Numbers Which is Composed of Its Aliquot Parts.
These works are recorded to have been completed in six days (the same day being six times repeated), because six is a perfect number,—not because God required a protracted time, as if He could not at once create all things, which then should mark the course of time by the movements proper to them, but because the perfection of the works was signified by the number six. For the number six is the first which is made up of its own parts, i.e ., of its sixth, third, and half, which are respectively one, two, and three, and which make a total of six. In this way of looking at a number, those are said to be its parts which exactly divide it, as a half, a third, a fourth, or a fraction with any denominator, e.g ., four is a part of nine, but not therefore an aliquot part; but one is, for it is the ninth part; and three is, for it is the third. Yet these two parts, the ninth and the third, or one and three, are far from making its whole sum of nine. So again, in the number ten, four is a part, yet does not divide it; but one is an aliquot part, for it is a tenth; so it has a fifth, which is two; and a half, which is five. But these three parts, a tenth, a fifth, and a half, or one, two, and five, added together, do not make ten, but eight. Of the number twelve, again, the parts added together exceed the whole; for it has a twelfth, that is, one; a sixth, or two; a fourth, which is three; a third, which is four; and a half, which is six. But one, two, three, four, and six make up, not twelve, but more, viz., sixteen. So much I have thought fit to state for the sake of illustrating the perfection of the number six, which is, as I said, the first which is exactly made up of its own parts added together; and in this number of days God finished His work. And, therefore, we must not despise the science of numbers, which, in many passages of holy Scripture, is found to be of eminent service to the careful interpreter. Neither has it been without reason numbered among God’s praises, “Thou hast ordered all things in number, and measure, and weight.”
Chapter 31.—Of the Seventh Day, in Which Completeness and Repose are Celebrated.
But, on the seventh day (i.e ., the same day repeated seven times, which number is also a perfect one, though for another reason), the rest of God is set forth, and then, too, we first hear of its being hallowed. So that God did not wish to hallow this day by His works, but by His rest, which has no evening, for it is not a creature; so that, being known in one way in the Word of God, and in another in itself, it should make a twofold knowledge, daylight and dusk (day and evening). Much more might be said about the perfection of the number seven, but this book is already too long, and I fear lest I should seem to catch at an opportunity of airing my little smattering of science more childishly than profitably. I must speak, therefore, in moderation and with dignity, lest, in too keenly following “number,” I be accused of forgetting “weight” and “measure.” Suffice it here to say, that three is the first whole number that is odd, four the first that is even, and of these two, seven is composed. On this account it is often put for all numbers together, as, “A just man falleth seven times, and riseth up again,” —that is, let him fall never so often, he will not perish (and this was meant to be understood not of sins, but of afflictions conducing to lowliness). Again, “Seven times a day will I praise Thee,” which elsewhere is expressed thus, “I will bless the Lord at all times.” And many such instances are found in the divine authorities, in which the number seven is, as I said, commonly used to express the whole, or the completeness of anything. And so the Holy Spirit, of whom the Lord says, “He will teach you all truth,” is signified by this number. In it is the rest of God, the rest His people find in Him. For rest is in the whole, i.e ., in perfect completeness, while in the part there is labor. And thus we labor as long as we know in part; “but when that which is perfect is come, then that which is in part shall be done away.” It is even with toil we search into the Scriptures themselves. But the holy angels, towards whose society and assembly we sigh while in this our toilsome pilgrimage, as they already abide in their eternal home, so do they enjoy perfect facility of knowledge and felicity of rest. It is without difficulty that they help us; for their spiritual movements, pure and free, cost them no effort.
Chapter 32.—Of the Opinion that the Angels Were Created Before the World.