De Synodis

⁵¹ And again, if, as we have said before, the Son is not such by participation, but, while all things originated have by participation the grace of God, He is the Father's Wisdom and Word of which all things partake, it follows that He, being the deifying and enlightening power of the Father, in which all things are deified and quickened, is not alien in essence from the Father, but coessential. For by partaking of Him, we partake of the Father; because that the Word is the Father's own. Whence, if He was Himself too from participation, and not from the Father His essential Godhead and Image, He would not deify, being deified Himself. For it is not possible that He, who merely possesses from participation, should impart of that partaking to others, since what He has is not His own, but the Giver's; and what He has received, is barely the grace sufficient for Himself. However, let us fairly examine the reason why some, as is said, decline the 'Coessential,' whether it does not rather show that the Son is coessential with the Father. They say then, as you have written, that it is not right to say that the Son is coessential with the Father, because he who speaks of 'coessential' speaks of three, one essence pre-existing, and that those who are generated from it are coessential: and they add, 'If then the Son be coessential with the Father, then an essence must be previously supposed, from which they have been generated; and that the One is not Father and the Other Son, but they are brothers together. ' As to all this, though it be a Greek interpretation, and what comes from them does not bind us, still let us see whether those things which are called coessential and are collateral, as derived from one essence presupposed, are coessential with each other, or with the essence from which they are generated. For if only with each other, then are they other in essence and unlike, when referred to that essence which generated them; for other in essence is opposed to coessential; but if each be coessential with the essence which generated them, it is thereby confessed that what is generated from any thing, is coessential with that which generated it; and there is no need of seeking for three essences, but merely to seek whether it be true that this is from that. For should it happen that there were not two brothers, but that only one had come of that essence, he that was generated would not be called alien in essence, merely because there was no other from the essence than he; but though alone, he must be coessential with him that begot him. For what shall we say about Jephtha's daughter; because she was only-begotten, and 'he had not,' says Scripture, 'other child'; and again, concerning the widow's son, whom the Lord raised from the dead, because he too had no brother, but was only-begotten, was on that account neither of these coessential with him that begot? Surely they were, for they were children, and this is a property of children with reference to their parents. And in like manner also, when the Fathers said that the Son of God was from His essence, reasonably have they spoken of Him as coessential. For the like property has the radiance compared with the light. Else it follows that not even the creation came out of nothing. For whereas men beget with passion, so again they work upon an existing subject matter, and otherwise cannot make. But if we do not understand creation in a human way, when we attribute it to God, much less seemly is it to understand generation in a human way, or to give a corporeal sense to Coessential; instead of receding from things originate, casting away human images, nay, all things sensible, and ascending to the Father, lest we rob the Father of the Son in ignorance, and rank Him among His own creatures.

52. Further, if, in confessing Father and Son, we spoke of two beginnings or two Gods as Marcion and Valentinus, or said that the Son had any other mode of godhead, and was not the Image and Expression of the Father, as being by nature born from Him, then He might be considered unlike; for such essences are altogether unlike each other. But if we acknowledge that the Father's godhead is one and sole, and that of Him the Son is the Word and Wisdom; and, as thus believing, are far from speaking of two Gods, but understand the oneness of the Son with the Father to be, not in likeness of their teaching, but according to essence and in truth, and hence speak not of two Gods but of one God; there being but one Form of Godhead, as the Light is one and the Radiance; (for this was seen by the Patriarch Jacob, as Scripture says, 'The sun rose upon him when the Form of God passed by,'); and beholding this, and understanding of whom He was Son and Image, the holy Prophets say, 'The Word of the Lord came to me;' and recognising the Father, who was beheld and revealed in Him, they made bold to say, 'The God of our fathers has appeared unto me, the God of Abraham, and Isaac, and Jacob'; this being so, wherefore scruple we to call Him coessential who is one with the Father, and appears as does the Father, according to likeness and oneness of godhead? For if, as has been many times said, He has it not to be proper to the Father's essence, nor to resemble, as a Son, we may well scruple: but if this be the illuminating and creative Power, specially proper to the Father, without Whom He neither frames nor is known (for all things consist through Him and in Him); wherefore, perceiving the fact, do we decline to use the phrase conveying it? For what is it to be thus connatural with the Father, but to be one in essence with Him? For God attached not to Him the Son from without, as needing a servant; nor are the works on a level with the Creator, and honoured as He is, or to be thought one with the Father. Or let a man venture to make the distinction, that the sun and the radiance are two lights, or different essences; or to say that the radiance accrued to it over and above, and is not a simple and pure offspring from the sun; such, that sun and radiance are two, but the light one, because the radiance is an offspring from the Sun. But, whereas not more divisible, nay less divisible is the nature of the Son towards the Father, and the godhead not accruing to the Son, but the Father's godhead being in the Son, so that he that has seen the Son has seen the Father in Him; wherefore should not such a one be called Coessential?