Genesis 5:3

6. Let us now see how we are to understand the expression “invisible image,” that we may in this way perceive how God is rightly called the Father of His Son; and let us, in the first place, draw our conclusions from what are customarily called images among men. That is sometimes called an image which is painted or sculptured on some material substance, such as wood or stone; and sometimes a child is called the image of his parent, when the features of the child in no respect belie their resemblance to the father. I think, therefore, that that man who was formed after the image and likeness of God may be fittingly compared to the first illustration. Respecting him, however, we shall see more precisely, God willing, when we come to expound the passage in Genesis. …

20. Again, when the Bishops said that the Word must be described as the True Power and Image of the Father, in all things exact and like the Father, and as unalterable, and as always, and as in Him without division (for never was the Word not, but He was always, existing everlastingly with the Father, as the radiance of light), Eusebius and his fellows endured indeed, as not daring to contradict, being put to shame by the arguments which were urged against them; but withal they were caught whispering to each other and winking with their eyes, that ‘like,’ and ‘always,’ and ‘power,’ and ‘in Him,’ were, as before, common to us and the Son, and that it was no difficulty to agree to these. …

We have thus generally described in a few words the several cases in which objects, because they are deemed to be different from what they really are, produce delusions in our senses. It is possible, of course, by a more laborious investigation, to extend one’s enquiry through all things which are really different in kind one from another, but are nevertheless thought, by virtue of some accidental resemblance, to be like one to the other. Can it possibly be such a form of “likeness” as this, that he is continually attributing to the Son? Nay, surely he cannot be so infatuated as to discover deceptive similarity in Him Who is the Truth. …

6. Oh! the madness and folly of those who have forsaken the teaching of the book of Proverbs, “My son, keep thy father’s commandment, and forsake not the law of thy mother,” and have turned to error, and say to the fool that he shall be their leader, and do not despise the foolish things which are said by the foolish man, even as the scripture bears witness, “The foolish man speaketh foolishly, and his heart understandeth vanity.” I beseech you, dearly beloved, and by the love which I feel towards you, I implore you, as though it were my own members on which I would have pity, by word and letter to fulfil that which is written, “Do not I hate them, O Lord, that hate thee? and am not I grieved with those that rise up against thee?” Origen’s words are the words of an enemy, hateful and repugnant to God and to His saints; and not only those which I have quoted, but countless others. …

XX. In my opinion He is called Son because He is identical with the Father in Essence; and not only for this reason, but also because He is Of Him. And He is called Only-Begotten, not because He is the only Son and of the Father alone, and only a Son; but also because the manner of His Sonship is peculiar to Himself and not shared by bodies. And He is called the Word, because He is related to the Father as Word to Mind; not only on account of His passionless Generation, but also because of the Union, and of His declaratory function. Perhaps too this relation might be compared to that between the Definition and the Thing defined since this also is called Λόγος . For, it says, he that hath mental perception of the Son (for this is the meaning of Hath Seen) hath also perceived the Father; and the Son is a concise demonstration and easy setting forth of the Father’s Nature. …

73. Therefore, beloved brethren, in declaring that the Son is like in all things to the Father, we declare nothing else than that He is equal. Likeness means perfect equality, and this fact we may gather from the Holy Scriptures, And Adam lived two hundred and thirty years, and begat a son according to his own image and according to his own likeness; and called his name Seth . I ask what was the nature of his likeness and image which Adam begot in Seth? Remove bodily infirmities, remove the first stage of conception, remove birth-pangs, and every kind of human need. I ask whether this likeness which exists in Seth differs in nature from the author of his being, or whether there was in each an essence of a different kind, so that Seth had not at his birth the natural essence of Adam? Nay, he had a likeness to Adam, even though we deny it, for his nature was not different. …