Matthew Chapter 10, Verse 14
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14: και ος εαν μη δεξηται υμας μηδε ακουση τους λογους υμων εξερχομενοι της οικιας η της πολεως εκεινης εκτιναξατε τον κονιορτον των ποδων υμων
14: And whosoever shall not receive you, nor hear your words, when
ye depart out of that house or city, shake off the dust of
your feet.
14: And whosoever shall not receive you, nor hear your words: going
forth out of that house or city shake off the dust from your feet.
Shake off the dust of your feet. The Jews taught uniformly that the dust of the Gentiles was impure, and was to be shaken off. To shake off the dust from the feet, therefore, was a significant act, denoting that they regarded them as impure, profane, and heathenish, and unworthy of their instruction, and that they declined all further connexion with them. It is recorded that this was actually done by some of the apostles. See Acts 13:51, Acts 18:6.

