'Chaff' in the Bible

Nations as the wasting of many waters are wasted, And He hath pushed against it, And it hath fled afar off, And been pursued as chaff of hills before wind, And as a rolling thing before a hurricane.

And as small dust hath been The multitude of those scattering thee, And as chaff passing on the multitude of the terrible, And it hath been at an instant -- suddenly.

Ye conceive chaff, ye bear stubble, Your spirit! -- fire devoureth you.

Lo, I have set thee for a new sharp threshing instrument, Possessing teeth, thou threshest mountains, And beatest small, and hills as chaff thou makest.