2 Bible Verses about Dust, Figurative Use

And if any one does not receive you, nor hear your words, when you go out of that house or that city, shake off the dust of your feet.

And they shall cast dust on their heads, and cry weeping and lamenting, saying, Alas, alas, the great city, by which all were enriched who had ships on the sea on account of her costly merchandise, for in one hour is it made desolate.