Basil of Caesarea

Does not the light of theology shine, in these words, as through windows; and does not the second Person show Himself in a mystical way, without yet manifesting Himself until the great day? Where is the Jew who resisted the truth and pretended that God was speaking to Himself? It is He who spoke, it is said, and it is He who made. Let there be light and there was light. But then their words contain a manifest absurdity. …

The Hexaemeron, Homily 9: The Creation of Terrestrial Animals ↗

Gregory of Nyssa

For the soul immediately shows its royal and exalted character, far removed as it is from the lowliness of private station, in that it owns no lord, and is self-governed, swayed autocratically by its own will; for to whom else does this belong than to a king? And further, besides these facts, the fact that it is the image of that Nature which rules over all means nothing else than this, that our nature was created to be royal from the first. …

On the Making of Man 4.1 ↗

Athanasius of Alexandria

But this is God's kindness to man, that of whom He is Maker, of them according to grace He afterwards becomes Father also; becomes, that is, when men, His creatures, receive into their hearts, as the Apostle says, 'the Spirit of His Son, crying, Abba, Father.' And these are they who, having received the Word, gained power from Him to become sons of God; for they could not become sons, being by nature creatures, otherwise than by receiving the Spirit of the natural and true Son. …

Four Discourses Against the Arians, Discourse 2, Section 59 ↗

Augustine of Hippo

For God said, "Let us make man in our image, after our likeness;" and a little after it is said, "So God created man in the image of God." Certainly, in that it is of the plural number, the word "our" would not be rightly used if man were made in the image of one person, whether of the Father, or of the Son, or of the Holy Spirit; but because he was made in the image of the Trinity, on that account it is said, "After our image." But again, lest we should think that three Gods were to be believed in the Trinity, whereas the same …

On the Trinity 12.6.6 ↗

Ambrose of Milan

But let us define more accurately the meaning of the phrase "to the image of God." Is it true that the flesh is made "to the image of God"? In that case, is there earth in God, since flesh is of earth? Is God corporeal, that is to say, weak and subject like the flesh to the passions? Perhaps the head may seem to you to be made in the likeness of God because it stands aloft, or the eyes because they observe or the ears because they hear? …

The Six Days of Creation ↗

Bede

And He said: Let us make man in our image and likeness. Now it appears more clearly why it is said of the created herbs and trees, fishes and birds, also terrestrial animals, that each was made according to its kind and species. For it was foreseen that his creation was coming, who would not only correspond by similarity and species to his own kind but would also be made in the image and likeness of his Creator. …

Commentary on Genesis (Hexaemeron) ↗