4 On the three foregoing days, then, we have investigated one method of acquiring the knowledge of God, and have brought it to a conclusion; explaining how “the heavens declare the glory of God;” and what the meaning of that is, which is said by Paul; viz. “That the invisible things of Him from the creation of the world are clearly seen, being understood by the things that are made.” And we showed how from the creation of the world, and how by heaven, and earth, the sea, the Creator is glorified.
But today, after briefly philosophising on that same subject, we will proceed to another topic. For He not only made it, but provided also that when it was made, it should carry on its operations; not permitting it to be all immoveable, nor commanding it to be all in a state of motion. The heaven, for instance, has remained immoveable, according as the prophet says, “He placed the heaven as a vault, and stretched it out as a tent over the earth.” But, on the other hand, the sun with the rest of the stars, runs on his course through every day. And again, the earth is fixed, but the waters are continually in motion; and not the waters only, but the clouds, and the frequent and successive showers, which return at their proper season.
The nature of the clouds is one, but the things which are produced out of them are different. For the rain, indeed, becomes wine in the grape, but oil in the olive. And in other plants is changed into their juices; and the womb of the earth is one, and yet bears different fruits. The heat, too, of the sun-beams is one, but it ripens all things differently; bringing some to maturity more slowly, and others more quickly. Who then but must feel astonishment and admiration at these things?
Source: Homilies on the Statues (New Advent)