"raised or flying dust" (konia, "dust," ornumi, "to stir up"), is found in Mat 10:14, Luk 9:5, Luk 10:11, Act 13:51, Act 22:23. primarily, "to winnow" (from likmos, "a winnowing-fan"), hence, "to scatter" as chaff or dust, is used in Mat 21:44, Luk 20:18, RV, "scatter as dust," AV, "grind to powder." There are indications in the papyri writings that the word came to denote "to ruin, to destroy."