And whoever will not receive you, when you go out of that city, shake off the very dust from your feet for a testimony against them.…
What can seem of less consequence, or more worthless, than a pinch of dust? You have but to open your fingers and the wind blows it away in a moment and you see it no more. Yet if but one small grain of dust is blown into your eye it will give you a great deal of trouble. One of the terrible plagues of Egypt sprang from a handful of dust, which God commanded Moses to fling into the air. Every little grain scattered into millions and millions of invisible poison-atoms floating through the air; and wherever they settled, on man or beast, dreadful boils and ulcers broke out. In the great deserts of Arabia and Africa the stormy wind sometimes brings such clouds of sand-dust, hot and stifling, that they hide the sun, and make the day as dark as night. The travellers have to lie flat on their faces, and the horses and camels to bend their noses down close to the ground, or they would be suffocated. Sometimes whole caravans have thus perished; and even a great army was once destroyed and buried in these terrible clouds of hot dust. In Egypt, temples and cities have been buried under hills of sand, made up of tiny grains, which the wind has kept sweeping up from the desert for hundreds of years. Very great things, you see, may come from very small things — even from dust.
(E. R. Conder, D. D.)
Parallel VersesKJV: And whosoever will not receive you, when ye go out of that city, shake off the very dust from your feet for a testimony against them.
WEB: As many as don't receive you, when you depart from that city, shake off even the dust from your feet for a testimony against them."