Basil of Caesarea

1. There are towns where the inhabitants, from dawn to eve, feast their eyes on the tricks of innumerable conjurors. They are never tired of hearing dissolute songs which cause much impurity to spring up in their souls, and they are often called happy, because they neglect the cares of business and trades useful to life, and pass the time, which is assigned to them on this earth, in idleness and pleasure. …

The Hexaemeron, Homily 4: Upon the Gathering Together of the Waters ↗

Gregory of Nyssa

Now as for the question, how any single thing came into existence, we must banish it altogether from our discussion. Even in the case of things which are quite within the grasp of our understanding and of which we have sensible perception, it would be impossible for the speculative reason to grasp the "how" of the production of the phenomenon; so much so, that even inspired and saintly men have deemed such questions insoluble. …

On the Soul and the Resurrection ↗

Bede

God said: Let the waters under the sky be gathered together into one place, and let the dry land appear; and it was so. The waters that filled everything between the sky and the earth were drawn off, and they gathered into one place, so that the light which shone clearly on the waters for the previous two days might shine more brightly in the pure air; and the earth which had been hidden appeared, and that which had remained muddy and weak under the waters, by their withdrawal, became dry, and was made suitable for receiving seeds. …

Commentary on Genesis (Hexaemeron) ↗

Bonaventure

Such is the third vision, of understanding instructed by Scriptures, which is figured in the work of the third day. And as in the work of the days, there is added a second to the first and a third to both of them, so also out of the first and second visions there comes forth a third, and this vision is more noble and greater than the preceding two. …

Collations on the Hexaemeron, Collation 13 ↗