Who can number the clouds by wisdom? Or who can tilt the waterskins of the heavens,
Hitherto God had put such questions to Job as were proper to convince him of his ignorance and short-sightedness. Now he comes, in the same manner, to show his impotency and weakness. As it is but little that he knows, and therefore he ought not to arraign the divine counsels, so it is but little that he can do, and therefore he ought not to oppose the proceedings of Providence.
Commenting on Job 38:25-41
When they couch in their dens, and abide in the covert to lie in wait? Which some understand of old lions, who, for want of strength, lie couchant in their dens, or in some covert place, waiting for any prey that passes by, to seize upon it.
Who appoints by his wisdom the due measure of the clouds? stay--rather, "empty"; literally, "lay down" or "incline" so as to pour out. bottles of heaven--rain-filled clouds.