The Importance of the Subject. The Ariansaffect Scripture language, but their doctrine new, as well as unscriptural. Statement of the Catholic doctrine, that the Son is proper to the Father's substance, and eternal. Restatement of Arianismin contrast, that He is a creature with a beginning: the controversy comes to this issue, whether one whom we are to believein as God, can be so in name only, and is merely a creature. What pretence then for being indifferent in the controversy? The Ariansrely on state patronage, and dare not avow their tenets
8 If then the use of certain phrases of divine Scripture changes, in their opinion, the blasphemy of the Thalia into reverent language, of course they ought also to deny Christ with the present Jews, when they see how they study the Law and the Prophets; perhaps too they will deny the Law and the Prophets like Manichees, because the latter read some portions of the Gospels. If such bewilderment and empty speaking be from ignorance, Scripture will teach them, that the devil, the author of heresies, because of the ill savour which attaches to evil, borrows Scripture language, as a cloak wherewith to sow the ground with his own poison also, and to seduce the simple. Thus he deceived Eve; thus he framed former heresies; thus he persuaded Arius at this time to make a show of speaking against those former ones, that he might introduce his own without observation. And yet, after all, the man of craft did not escape. For being irreligious towards the Word of God, he lost his all at once, and betrayed to all men his ignorance of other heresies too; and having not a particle of truth in his belief, does but pretend to it. For how can he speak truth concerning the Father, who denies the Son, that reveals concerning Him? Or how can he be orthodox concerning the Spirit, while he speaks profanely of the Word that supplies the Spirit? And who will trust him concerning the Resurrection, denying, as he does, Christ for us the first-begotten from the dead? And how shall he not err in respect to His incarnate presence, who is simply ignorant of the Son's genuine and true generation from the Father? For thus, the former Jews also, denying the Word, and saying, 'We have no king but Cæsar,' were immediately stripped of all they had, and forfeited the light of the Lamp, the odour of ointment, knowledge of prophecy, and the Truth itself; till now they understand nothing, but are walking as in darkness. For who was ever yet a hearer of such a doctrine? Or whence or from whom did the abettors and hirelings of the heresy gain it? Who thus expounded to them when they were at school? Who told them, 'Abandon the worship of the creation, and then draw near and worship a creature and a work?' But if they themselves own that they have heard it now for the first time, how can they deny that this heresy is foreign, and not from our fathers? But what is not from our fathers, but has come to light in this day, how can it be but that of which the blessed Paul has foretold, that 'in the latter times some shall depart from the sound faith, giving heed to seducing spirits and doctrines of devils, in the hypocrisy of liars; cauterized in their own conscience, and turning from the truth?'
9. For, behold, we take divine Scripture, and thence discourse with freedom of the religious Faith, and set it up as a light upon its candlestick, saying:— Very Son of the Father, natural and genuine, proper to His essence, Wisdom Only-begotten, and Very and Only Word of God is He; not a creature or work, but an offspring proper to the Father's essence. Wherefore He is very God, existing one in essence with the very Father; while other beings, to whom He said, 'I said you are Gods,' had this grace from the Father, only by participation of the Word, through the Spirit. For He is the expression of the Father's Person, and Light from Light, and Power, and very Image of the Father's essence. For this too the Lord has said, 'He that has seen Me, has seen the Father.' And He ever was and is and never was not. For the Father being everlasting, His Word and His Wisdom must be everlasting. On the other hand, what have these persons to show us from the infamous Thalia? Or, first of all, let them read it themselves, and copy the tone of the writer; at least the mockery which they will encounter from others may instruct them how low they have fallen; and then let them proceed to explain themselves. For what can they say from it, but that 'God was not always a Father, but became so afterwards; the Son was not always, for He was not before His generation; He is not from the Father, but He, as others, has come into subsistence out of nothing; He is not proper to the Father's essence, for He is a creature and work?' And 'Christ is not very God, but He, as others, was made God by participation; the Son has not exact knowledge of the Father, nor does the Word see the Father perfectly; and neither exactly understands nor knows the Father. He is not the very and only Word of the Father, but is in name only called Word and Wisdom, and is called by grace Son and Power. He is not unalterable, as the Father is, but alterable in nature, as the creatures, and He comes short of apprehending the perfect knowledge of the Father.' Wonderful this heresy, not plausible even, but making speculations against Him that is, that He be not, and everywhere putting forward blasphemy for reverent language! Were any one, after inquiring into both sides, to be asked, whether of the two he would follow in faith, or whether of the two spoke fitly of God—or rather let them say themselves, these abettors of irreligion, what, if a man be asked concerning God (for 'the Word was God?'), it were fit to answer. For from this one question the whole case on both sides may be determined, what is fitting to say—He was, or He was not; always, or before His birth; eternal, or from this and from then; true, or by adoption, and from participation and in idea; to call Him one of things originated, or to unite Him to the Father; to consider Him unlike the Father in essence, or like and proper to Him; a creature, or Him through whom the creatures were originated; that He is the Father's Word, or that there is another word beside Him, and that by this other He was originated, and by another wisdom; and that He is only named Wisdom and Word, and has become a partaker of this wisdom, and second to it?
Source: Four Discourses Against the Arians (New Advent)