Genesis 1:25

It wasn't simply for our use that he produced all these things; it was also for our benefit in the sense that we might see the overflowing abundance of his creatures and be overwhelmed at the Creator's power, and be in a position to know that all these things were produced by a certain wisdom and ineffable love out of regard for the human being that was destined to come into being.

The soul of brute beasts did not emerge after having been hidden in the earth, but it was called into existence of the time of the command.

God said: "Let the earth bring forth living creatures according to their kinds: cattle and creeping things and beasts of the earth according to their kinds." Different natures of animals sprang forth from the one earth at a single command—the gentle sheep and the carnivorous lion—and the various tendencies of irrational animals that display analogies to various human characteristics. Thus the fox typifies the craftiness of men, the snake the venomous treachery of friends and the neighing horse the wanton young man. There is the busy ant to rouse the indolent and sluggish; for when a man spends an idle youth, then he is instructed by the irrational creatures, being chided by the sacred Scripture, which says, "Go to the ant, O sluggard, and considering her ways, emulate her and become wiser than she." For when you observe her treasuring up food for herself in good season, imitate her. Treasure up for yourself the fruits of good works for the world to come.

"Let the earth bring forth living creatures according to their kinds: cattle and creeping things and beasts of the earth according to their kinds." Consider the word of God moving through all creation, having begun at that time, active up to the present and efficacious until the end, even to the consummation of the world. As a ball, when pushed by someone and then meeting with a slope, is borne downward by its own shape and the inclination of the ground and does not stop before some level surface receives it, so too the nature of existing objects, set in motion by one command, passes through creation, without change, by generation and destruction, preserving the succession of the species through resemblance, until it reaches the very end.

Let us glorify the Master Craftsman for all that has been done wisely and skillfully, and from the beauty of the visible things let us form an idea of him who is more than beautiful. And from the greatness of these perceptible and circumscribed bodies let us conceive of him who is infinite and immense and who surpasses all understanding in the plenitude of his power. For even if we are ignorant of things made, yet at least that which in general comes under our observation is so wonderful that even the most acute mind is shown to be at a loss as regards the least of the things in the world, either in the ability to explain it worthily or to render due praise to the Creator, to whom be all glory, honor and power forever.