Matthew 10:14

JMNT(i) 14 "Also, whoever may not welcome and receive you men, nor even listen to your words or hear your message, as you are going outside, from out of the house or that city, shake the dust off your feet. [note: Hospitality in those times and countries involved having a servant wash the feet of their guests; further: Jews did this when they left a Gentile country, so this would indicate that this town was being regarded as polluted and unholy, and in the same category as the Gentiles; comment: this could be a metaphor to shake off that incident, so as not to let their “humanity” cling to them]