Dost thou know the balancings of the clouds, the wondrous works of him which is perfect in knowledge?
Hebrew, 'Hast thou understanding of the balancings,' etc., how the clouds are poised in the air, so that their watery gravity does not bring them to the earth? The condensed moisture, descending by gravity, meets a warmer temperature, which dissipates it into vapour (the tendency of which is to ascend) and so counteracts the descending force.
Perfect in knowledge - God: not here in the sense that Elihu uses it of himself (Job 36:4).
Dost thou know - how, etc.