'Dust' in the Bible

There will be so many horses that the dust raised by them will cover you completely. The walls of your city will tremble from the noise of Nebuchadnezzar's cavalry, wagons, and chariots when they enter through the gates of your city, as men enter a city that has been breached.

and they will cry so loud you won't be able to make yourself heard! How bitterly they'll cry! They'll throw dust on their heads and wallow in ashes.