"The heavens declare the glory of God." Psalm 19:1

"The book of nature has three leaves, heaven, earth, and sea, of which heaven is the first and the most glorious, and by its aid we are able to see the beauties of the other two. Any book without its first page would be sadly imperfect, and especially the great Natural Bible, since its first pages, the sun, moon, and stars, supply light to the rest of the volume, and are thus the keys, without which the writing which follows would be dark and undiscerned. Man walking erect was evidently made to scan the skies, and he who begins to read creation by studying the stars begins the book at the right place.
The heavens are plural for their variety, comprising the watery heavens with their clouds of countless forms, the aerial heavens with their calms and tempests, the solar heavens with all the glories of the day, and the starry heavens with all the marvels of the night; what the Heaven of heavens must be hath not entered into the heart of man, but there in chief all things are telling the glory of God. Any part of creation has more instruction in it than human mind will ever exhaust, but the celestial realm is peculiarly rich in spiritual lore. The heavens declare, or are declaring, for the continuance of their testimony is intended by the participles employed; every moment God's existence, power, wisdom and goodness, are being sounded abroad by the heavenly heralds which shine upon us from above. He who would guess at divine sublimity should gaze upward into the starry vault; he who would imagine infinity must peer into the boundless expanse; he who desires to see divine wisdom should consider the balancing of the orbs; he who would know divine fidelity must mark the regularity of the planetary motions; and he who would attain some conceptions of divine power, greatness, and majesty, must estimate the forces of attraction, the magnitude of the fixed stars, and the brightness of the whole celestial train. It is not merely glory that the heavens declare, but the "glory of God," for they deliver to us such unanswerable arguments for a conscious, intelligent, planning, controlling, and presiding Creator, that no unpredjudiced person can remain unconvinced by them. The testimony given by the heavens is no mere hint, but a plain, unmistakable declaration; and it is a declaration of the most constant and abiding kind. Yet for all this, to what avail is the loudest declaration to a deaf man, or the clearest showing to one spiritually blind? God the Holy Ghost must illuminate us, or all the suns in the milky way never will."

- Charles H. Spurgeon "Treasury of David"