Or, because without the wind the wheat and chaff cannot be separated, therefore He has the fan in His hand, which shews some to be chaff, some wheat; for when you were as the light chaff; (i. e. unbelieving,) temptation shewed you to be what you knew not; but when you shall bravely endure temptation, the temptation will not make you faithful and enduring, but it will bring to light the virtue which was hid in you.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).