He then exposes argument about the Generate, and the product of making, and product of creation, and shows the impious nature of the language of Eunomius and Theognostus on the immediate and undivided character of the essence, and its relation to its creator and maker
Let us proceed, however, to what follows in order. He says that the generation of the essence is “without intervention,” and that it “preserves indivisible its relation to its Generator, Maker, and Creator.” Well, if he had spoken of the immediate and indivisible character of the essence, and stopped his discourse there, it would not have swerved from the orthodox view, since we too confess the close connection and relation of the Son with the Father, so that there is nothing inserted between them which is found to intervene in the connection of the Son with the Father, no conception of interval, not even that minute and indivisible one, which, when time is divided into past, present, and future, is conceived indivisibly by itself as the present, as it cannot be considered as a part either of the past or of the future, by reason of its being quite without dimensions and incapable of division, and unobservable, to whichever side it might be added.
That, then, which is perfectly immediate, admits we say, of no such intervention; for that which is separated by any interval would cease to be immediate. If, therefore, our author, likewise, in saying that the generation of the Son is “without intervention,” excluded all these ideas, then he laid down the orthodox doctrine of the conjunction of Him Who is with the Father. When, however, as though in a fit of repentance, he straightway proceeded to add to what he had said that the essence “preserves its relation to its Generator, Maker, and Creator,” he polluted his first statement by his second, vomiting forth his blasphemous utterance upon the pure doctrine.
For it is clear that there too his “without intervention” has no orthodox intention, but, as one might say that the hammer is mediate between the smith and the nail, but its own making is “without intervention,” because, when tools had not yet been found out by the craft, the hammer came first from the craftsman's hands by some inventive process, not by means of any other tool, and so by it the others were made; so the phrase, “without intervention,” indicates that this is also our author's conception touching the Only-begotten.
And here Eunomius is not alone in his error as regards the enormity of his doctrine, but you may find a parallel also in the works of Theognostus, who says that God, wishing to make this universe, first brought the Son into existence as a sort of standard of the creation; not perceiving that in his statement there is involved this absurdity, that what exists, not for its own sake, but for the sake of something else, is surely of less value than that for the sake of which it exists: as we provide an implement of husbandry for the sake of life, yet the plough is surely not reckoned as equally valuable with life.
So, if the Lord also exists on account of the world, and not all things on account of Him, the whole of the things for the sake of which they say He exists, would be more valuable than the Lord. And this is what they are here establishing by their argument, where they insist that the Son has His relation to His Creator and Maker “without intervention.”
Source: Against Eunomius (New Advent)