Several ways of controverting his quibbling syllogisms
But perhaps a man would be more easily led into the true view by personal illustrations; so let us leave this looking backwards and forwards and this twisting of false premisses, and discuss the matter in a less learned and more popular way. Your father, Eunomius, was certainly a human being; but the same person was also the author of your being. Did you, then, ever use in his case too this clever quibble which you have employed; so that your own 'father,' when once he receives the true definition of his being, can no longer mean, because of being a 'man,' any relationship to yourself; 'for he must be one of two things, either a man, or Eunomius' father?'— Well, then, you must not use the names of intimate relationship otherwise than in accordance with that intimate meaning. Yet, though you would indict for libel any one who contemptuously scoffed against yourself, by means of such an alteration of meanings, are you not afraid to scoff against God; and are you safe when you laugh at these mysteries of our faith? As 'your father' indicates relationship to yourself, and at the same time humanity is not excluded by that term, and as no one in his sober senses instead of styling him who begot you 'your father' would render his description by the word 'man,' or, reversely, if asked for his genus and answering 'man,' would assert that that answer prevented him from being your father; so in the contemplation of the Almighty a reverent mind would not deny that by the title of Father is meant that He is without generation, as well as that in another meaning it represents His relationship to the Son. Nevertheless Eunomius, in open contempt of truth, does assert that the title cannot mean the 'having begotten a son' any longer, when once the word has conveyed to us the idea of 'never having been generated.'
Let us add the following illustration of the absurdity of his assertions. It is one that all must be familiar with, even mere children who are being introduced under a grammar-tutor to the study of words. Who, I say, does not know that some nouns are absolute and out of all relation, others express some relationship. Of these last, again, there are some which incline, according to the speaker's wish, either way; they have a simple intention in themselves, but can be turned so as to become nouns of relation. I will not linger among examples foreign to our subject. I will explain from the words of our Faith itself.
God is called Father and King and other names innumerable in Scripture. Of these names one part can be pronounced absolutely, i.e. simply as they are, and no more: viz.. “imperishable,” “everlasting,” “immortal,” and so on. Each of these, without our bringing in another thought, contains in itself a complete thought about the Deity. Others express only relative usefulness; thus, Helper, Champion, Rescuer, and other words of that meaning; if you remove thence the idea of one in need of the help, all the force expressed by the word is gone. Some, on the other hand, as we have said, are both absolute, and are also among the words of relation; 'God,' for instance, and 'good,' and many other such. In these the thought does not continue always within the absolute. The Universal God often becomes the property of him who calls upon Him; as the Saints teach us, when they make that independent Being their own. 'The Lord God is Holy;' so far there is no relation; but when one adds the Lord Our God, and so appropriates the meaning in a relation towards oneself, then one causes the word to be no longer thought of absolutely. Again; “Abba, Father” is the cry of the Spirit; it is an utterance free from any partial reference. But we are bidden to call the Father in heaven, 'Our Father.' this is the relative use of the word. A man who makes the Universal Deity his own, does not dim His supreme dignity; and in the same way there is nothing to prevent us, when we point out the Father and Him who comes from Him, the Firstborn before all creation, from signifying by that title of Father at one and the same time the having begotten that Son, and also the not being from any more transcendent Cause. For he who speaks of the First Father means Him who is presupposed before all existence, Whose is the beyond. This is He, Who has nothing previous to Himself to behold, no end in which He shall cease. Whichever way we look, He is equally existing there for ever; He transcends the limit of any end, the idea of any beginning, by the infinitude of His life; whatever be His title, eternity must be implied with it.
But Eunomius, versed as he is in the contemplation of that which eludes thought, rejects this view of unscientific minds; he will not admit a double meaning in the word 'Father,' the one, that from Him are all things and in the front of all things the Only-begotten Son, the other, that He Himself has no superior Cause. He may scorn the statement; but we will brave his mocking laugh, and repeat what we have said already, that the 'Father' is the same as that Ungenerate One, and both signifies the having begotten the Son, and represents the being from nothing.
But Eunomius, contending with this statement of ours, says (the very contrary now of what he said before), “If God is Father because He has begotten the Son, and 'Father' has the same meaning as Ungenerate, God is Ungenerate because He has begotten the Son, but before He begot Him He was not Ungenerate.” Observe his method of turning round; how he pulls his first quibble to pieces, and turns it into the very opposite, thinking even so to entrap us in a conclusion from which there is no escape. His first syllogism presented the following absurdity, “If 'Father' means the coming from nothing, then necessarily it will no longer indicate the having begotten the Son.” But this last syllogism, by turning (a premiss) into its contrary, threatens our faith with another absurdity. How, then, does he pull to pieces his former conclusion? “If He is 'Father' because He has begotten a Son.” His first syllogism gave us nothing like that; on the contrary, its logical inference purported to show that if the Father's not having been generated was meant by the word Father, that word could not mean as well the having begotten a Son. Thus his first syllogism contained no intimation whatever that God was Father because He had begotten a Son. I fail to understand what this argumentative and shrewdly professional reversal means.
Source: Against Eunomius (New Advent)