Genesis 1:31

He made a first day, a second, a third, and so forth until the seventh day which was a rest from work. According to these days, everything created was subdivided, brought into an order by inexpressible laws. So creation was not an instantaneous act by the all-powerful Word; for him to think or to speak is to accomplish a task. If humans were last to enter the world—and in such a way as to honor God’s handiwork with God’s image—is this not marvelous? It is like saying that as a king he prepared the palace and then, as king, when everything was already prepared, led in the procession.

From the goods that inhere in the nature of creation—they are indeed very good, even as the Lord said—one can apprehend the supreme and everlasting good. The order of the universe, its arrangement and its beauty—is not a man moved by this to love his Creator, even if he is slow in ability? For if we love our parents because they have produced us, how much more ought we to love the Creator of our parents and our own Creator! Therefore the power of God is a creating power. Even if God is not seen, he is judged from his works, and his works betray the workman, so that he who is not comprehended may be perceived.

I mean, his all-powerful hand and boundless wisdom were not at a loss even to create everything in one day. Why say “one day”? Even in a brief moment. Yet it was not because of its utility to him that he produced anything that exists, since being self-sufficient he is in need of nothing. It was rather out of his loving kindness and goodness that he created everything; accordingly he created things in sequence and provided us with a clear instruction about created things through the tongue of the blessed author, so that we might learn about them precisely and not fall into the error of those led by purely human reasoning.

Sacred Scripture commends the perfection of the number six to us especially in this, that God completed his works in six days and made man in the image of God on the sixth day. And the Son of God came in the sixth age of the human race and was made the Son of man, in order to reform us in the image of God. This is the age in which we are at present, whether a thousand years are assigned to each age or whether we settle upon memorable and notable personages as turning points of time. Thus the first age is found from Adam to Noah, the second from that time to Abraham, and after that … from Abraham to David, from David to the carrying away to Babylon, and from then to the birth of the Virgin. These three ages added to those make five. Hence the birth of the Lord inaugurated the sixth age, which is now in progress up to the hidden end of time.

Certainly we should not carelessly pass over the words of Scripture that say, “And God saw that all the things that he had made were very good.” For when dealing with individual things, it only says, “God saw that it is good,” but in speaking of all things, it was not enough to say “good” without adding “very” as well. For if prudent observers consider the single works of God, they find that individually in their own species, they have praiseworthy measures, numbers and orders. How much more then will this be true of all of them together, that is, of the universe that is filled with these individual things gathered into unity? For every beauty that is composed of parts is much more praiseworthy in the whole than in a part.

No one doubts that God himself is the primal good. Indeed things can be said to be similar to God in many ways. Some, created in accordance with power and wisdom, are similar to God because uncreated power and wisdom are in him. Other created things are similar to God in the simple fact that they are alive, and God is incomparably alive and the source of life. Other created things are similar to God in that they have being, for God is the highest being and the source of being. And even those things that merely exist and yet do not live or know are in his likeness, not completely but in a slight degree, because even they are good in their own order, while God is incomparably good in a way transcending all other goods and from whom everything good proceeds.

And there was evening and there was morning, the sixth day. Thus the heavens and the earth and all their array were completed. The number six is considered to be perfect because it is completed by its parts: namely the sixth which is one, the third which is two, and the half which is three. Indeed, one and two and three make up six, which in the units of numbers you will nowhere else find except here, nor in the tens except for the number twenty-eight. Therefore, in six days God completed all the array of the heaven and the earth, so that He who established all things in measure and number and weight, might also teach that His works are perfect in this very number in which He worked. And God completed on the seventh day His work which He had made. In another translation, it is said that God completed His works which He had made on the sixth day. This brings up no question at all because it is declared plainly in the description of what was done in it. But it is rightly questioned how our version, which descends from the Hebrew truth, says that God completed His work which He had made on the seventh day, in which nothing new is mentioned as having been created, unless perhaps we say that He made the seventh day itself then, and in its making completed His work, by which creation of it He finished the measure and number of the days by whose cycle all ages henceforth would proceed to their end. For in the revolution of times, the eighth day is counted the same as the first day.

And God saw all that he had made, and behold, it was very good. Because it was said of each of God's works individually that he saw that they were good, rightly in conclusion, with all things completed, it was stated with an added emphasis that he saw all that he had made, and it was very good. But the question rightly arises, why of man, when he was made, was it not additionally stated individually: And God saw that it was good, but rather that his creation was more generally praised among the others? Or did God, foreseeing that man would sin and not remain in the perfection of his image, wish to state that he was good not individually but along with the others, as if indicating what was to come? Therefore, man before sin and undoubtedly in his own kind was good, but Scripture omitted saying this, rather to state more what would announce something to come. For God is the best creator of natures, but indeed the most just regulator of sinners, so that even if certain things become deformed through individual sins, yet the entirety always remains beautiful with them.

God saw all the things that He had made, and they were very good: But among them were also the demons. Therefore the demons were at some time good.
Corporeal creatures according to their nature are good, though this good is not universal, but partial and limited, the consequence of which is a certain opposition of contrary qualities, though each quality is good in itself. To those, however, who estimate things, not by the nature thereof, but by the good they themselves can derive therefrom, everything which is harmful to themselves seems simply evil. For they do not reflect that what is in some way injurious to one person, to another is beneficial, and that even to themselves the same thing may be evil in some respects, but good in others. And this could not be, if bodies were essentially evil and harmful.