'Dust' in the Bible

And as for those who do not receive you, as you go out from that city, shake the dust off your feet as a testimony against them.”

‘Even the dust of your city which clings to our feet we wipe off in protest against you; yet be sure of this, that the kingdom of God has come near.’

Everyone who falls on that stone will be broken to pieces; but on whomever it falls, it will scatter him like dust.”