Answer to Eunomius' Second Book
But it may be said that the voice of the Father was addressed to the Holy Spirit. But neither does the Holy Spirit require instruction by speech, for being God, as says the Apostle, He “searches all things, yea the deep things of God.” If, then, God utters any word, and all speech is directed to the ear, let those who maintain that God expresses Himself in the language of continuous discourse, inform us what audience He addressed. Himself He needs not address. The Son has no need of instruction by words. The Holy Ghost searches even the deep things of God. Creation did not yet exist. To whom, then, was God's word addressed?
But, says he, the record of Moses does not lie, and from it we learn that God spoke. No! nor is great David of the number of those who lie, and he expressly says; “The heavens declare the glory of God, and the firmament shows His handy work. Day unto day utters speech, and night unto night shows knowledge;” and after saying that the heavens and the firmament declare, and that day and that night shows knowledge and speech, he adds to what he has said, that “there is neither speech nor language, and that their voices are not heard.” Yet how can such declaring and showing forth be other than words, and how is it that no voice addresses itself to the ear? Is the prophet contradicting himself, or is he stating an impossibility, when he speaks of words without sound, and declaration without language, and announcement without voice? Or, is there not rather the very perfection of truth in his teaching, which tells us, in the words which I have quoted, that the declaration of the heavens, and the word shouted forth by the day, is no articulate voice nor language of the lips, but is a revelation of the power of God to those who are capable of hearing it, even though no voice be heard?
What, then, do we think of this passage? For it may be that, if we understand it, we shall also understand the meaning of Moses. It often happens that Holy Scripture, to enable us more clearly to comprehend a matter to be revealed, makes use of a bodily illustration, as would seem to be the case in this passage from David, who teaches us by what he says that none of the things which are have their being from chance or accident, as some have imagined that our world and all that is therein was framed by fortuitous and undesigned combinations of first elements, and that no Providence penetrated the world. But we are taught that there is a cause of the system and government of the Universe, on Whom all nature depends, to Whom it owes its origin and cause, towards Whom it inclines and moves, and in Whom it abides. And since, as says the Apostle, His eternal power and godhead are understood, being clearly seen through the creation of the world, therefore all creation and, before all, as says the Scripture, the system of the heavens, declare the wisdom of the Creator in the skill displayed by His works. And this is what it seems to me that he is desirous to set forth, viz. the testimony of the things which do appear to the fact that the worlds were framed with wisdom and skill, and abide for ever by the power of Him who is the Ruler over all. The very heavens, he says, in displaying the wisdom of Him Who made them, all but shout aloud with a voice, and, though without voice, proclaim the wisdom of their Creator. For we can hear as it were words teaching us: “O men, when you gaze upon us and behold our beauty and magnitude, and this ceaseless revolution, with its well-ordered and harmonious motion, working in the same direction and in the same manner, turn your thoughts to Him Who presides over our system, and, by aid of the beauty which you see, imagine to yourselves the beauty of the invisible Archetype. For in us there is nothing without its Lord, nothing that moves of its own proper motion: but all that appears, or that is conceivable in respect to us, depends on a Power Who is inscrutable and sublime.” This is not given in articulate speech, but by the things which are seen, and it instils into our minds the knowledge of Divine power more than if speech proclaimed it with a voice. As, then, the heavens declare, though they do not speak, and the firmament shows God's handy-work, yet requires no voice for the purpose, and the day utters speech, though there is no speaking, and no one can say that Holy Scripture is in error— in like manner, since both Moses and David have one and the same Teacher, I mean the Holy Spirit, Who says that the fiat went before the creation, we are not told that God is the Creator of words, but of things made known to us by the signification of our words. For, lest we should suppose the creation to be without its Lord, and spontaneously originated, He says that it was created by the Divine Being, and that it is established in an orderly and connected system by Him. Now it would be a work of time to discuss the order of what Moses didactically records in his historical summary respecting the creation of the world. Or (if we did) each second passage would serve to prove more clearly the erroneous and futile character of our adversaries' opinion. But whoever cares to do so may read what we have written on Genesis, and judge whether our teaching or theirs is the more reasonable.
But to return to the matter in question. We assert that the words “He said” do not imply voice and words on the part of God; but the writer, in showing the power of God to be concurrent with His will, renders the idea more easy of apprehension. For since by the will of God all things were created, and it is the ordinary way of men to signify their will first of all by speech, and so to bring their work into harmony with their will, and the scriptural account of the Creation is the learner's introduction, as it were, to the knowledge of God, representing to our minds the power of the Divine Being by objects more ready to our comprehension (for sensible apprehension is an aid to intellectual knowledge), on this account, Moses, by saying that God commanded all things to be, signifies to us the inciting power of His will, and by adding, “and it was so,” he shows that in the case of God there is no difference between will and performance; but, on the contrary, that though the purposing initiates God's activity, the accomplishment keeps pace with the purpose, and that the two are to be considered together and at once, viz. the deliberate motion of the mind, and the power that effects its purpose. For the idea of the Divine purpose and action leaves no conceivable interval between them, but as light is produced along with the kindling of fire, at once coming out from it and shining forth along with it— in the same manner the existence of things created is an effect of the Divine will, but not posterior to it in time.
Source: Answer to Eunomius' Second Book (New Advent)