Verse 5
Look unto the heavens - These heavens, and their host, God has created: the bare sight of them is sufficient to show thee that God is infinitely beyond thee in wisdom and excellence.
Behold the clouds - שחקים shechakim, the ethers, (Vulgate, aethera), from שחק shachak, to contend, fight together: the agitated or conflicting air and light; the strong agitation of these producing both light and heat. Look upon these, consider them deeply, and see and acknowledge the perfections of the Maker.