It will not do to apply this conception, as drawn out above, of the Father and Son to the Creation, as they insist on doing: but we must contemplate the Son apart with the Father, and believethat the Creation had its origin from a definite point
But perhaps some of the opponents of this will say, 'The Creation also has an acknowledged beginning; and yet the things in it are not connected in thought with the everlastingness of the Father, and it does not check, by having a beginning of its own, the infinitude of the divine life, which is the monstrous conclusion this discussion has pointed out in the case of the Father and the Son. One therefore of two things must follow. Either the Creation is everlasting; or, it must be boldly admitted, the Son is later in time (than the Father). The conception of an interval in time will lead to monstrous conclusions, even when measured from the Creation up to the Creator.'
One who demurs so, perhaps from not attending closely to the meaning of our belief, fights against it with alien comparisons which have nothing to do with the matter in hand. If he could point to anything above Creation which has its origin marked by any interval of time, and it were acknowledged possible by all to think of any time-interval as existing before Creation, he might have occasion for endeavouring to destroy by such attacks that everlastingness of the Son which we have proved above. But seeing that by all the suffrages of the faithful it is agreed that, of all things that are, part is by creation, and part before creation, and that the divine nature is to be believed uncreate (although within it, as our faith teaches, there is a cause, and there is a subsistence produced, but without separation, from the cause), while the creation is to be viewed in an extension of distances—all order and sequence of time in events can be perceived only in the ages (of this creation), but the nature pre-existent to those ages escapes all distinctions of before and after, because reason cannot see in that divine and blessed life the things which it observes, and that exclusively, in creation. The creation, as we have said, comes into existence according to a sequence of order, and is commensurate with the duration of the ages, so that if one ascends along the line of things created to their beginning, one will bound the search with the foundation of those ages. But the world above creation, being removed from all conception of distance, eludes all sequence of time: it has no commencement of that sort: it has no end in which to cease its advance, according to any discoverable method of order. Having traversed the ages and all that has been produced therein, our thought catches a glimpse of the divine nature, as of some immense ocean, but when the imagination stretches onward to grasp it, it gives no sign in its own case of any beginning; so that one who after inquiring with curiosity into the 'priority' of the ages tries to mount to the source of all things will never be able to make a single calculation on which he may stand; that which he seeks will always be moving on before, and no basis will be offered him for the curiosity of thought.
It is clear, even with a moderate insight into the nature of things, that there is nothing by which we can measure the divine and blessed Life. It is not in time, but time flows from it; whereas the creation, starting from a manifest beginning, journeys onward to its proper end through spaces of time; so that it is possible, as Solomon somewhere says, to detect in it a beginning, an end, and a middle; and mark the sequence of its history by divisions of time. But the supreme and blessed life has no time-extension accompanying its course, and therefore no span nor measure. Created things are confined within the fitting measures, as within a boundary, with due regard to the good adjustment of the whole by the pleasure of a wise Creator; and so, though human reason in its weakness cannot reach the whole way to the contents of creation, yet still we do not doubt that the creative power has assigned to all of them their limits and that they do not stretch beyond creation. But this creative power itself, while circumscribing by itself the growth of things, has itself no circumscribing bounds; it buries in itself every effort of thought to mount up to the source of God's life, and it eludes the busy and ambitious strivings to get to the end of the Infinite. Every discursive effort of thought to go back beyond the ages will ascend only so far as to see that that which it seeks can never be passed through: time and its contents seem the measure and the limit of the movement and the working of human thought, but that which lies beyond remains outside its reach; it is a world where it may not tread, unsullied by any object that can be comprehended by man. No form, no place, no size, no reckoning of time, or anything else knowable, is there: and so it is inevitable that our apprehensive faculty, seeking as it does always some object to grasp, must fall back from any side of this incomprehensible existence, and seek in the ages and in the creation which they hold its kindred and congenial sphere.
All, I say, with any insight, however moderate, into the nature of things, know that the world's Creator laid time and space as a background to receive what was to be; on this foundation He builds the universe. It is not possible that anything which has come or is now coming into being by way of creation can be independent of space or time. But the existence which is all-sufficient, everlasting, world-enveloping, is not in space, nor in time: it is before these, and above these in an ineffable way; self-contained, knowable by faith alone; immeasurable by ages; without the accompaniment of time; seated and resting in itself, with no associations of past or future, there being nothing beside and beyond itself, whose passing can make something past and something future. Such accidents are confined to the creation, whose life is divided with time's divisions into memory and hope. But within that transcendent and blessed Power all things are equally present as in an instant: past and future are within its all-encircling grasp and its comprehensive view.
This is the Being in which, to use the words of the Apostle, all things are formed; and we, with our individual share in existence, live and move, and have our being. It is above beginning, and presents no marks of its inmost nature: it is to be known of only in the impossibility of perceiving it. That indeed is its most special characteristic, that its nature is too high for any distinctive attribute. A very different account to the Uncreate must be given of Creation: it is this very thing that takes it out of all comparison and connection with its Maker; this difference, I mean, of essence, and this admitting a special account explanatory of its nature which has nothing in common with that of Him who made it. The Divine nature is a stranger to these special marks in the creation: It leaves beneath itself the sections of time, the 'before' and the 'after,' and the ideas of space: in fact 'higher' cannot properly be said of it at all. Every conception about that uncreate Power is a sublime principle, and involves the idea of what is proper in the highest degree.
Source: Against Eunomius (New Advent)