'Chaff' in the Bible

The nations will rush like the rushing of many waters: but he will rebuke them, and they will flee far off, and will be chased like the chaff of the mountains before the wind, and like the whirling dust before the storm.

But the multitude of your foes will be like fine dust, and the multitude of the ruthless ones like chaff that blows away. Yes, it will be in an instant, suddenly.

You will conceive chaff. You will bring forth stubble. Your breath is a fire that will devour you.

Behold, I have made you into a new sharp threshing instrument with teeth. You will thresh the mountains, and beat them small, and will make the hills like chaff.