Matthew 10:12-15
12 As you enter the home, give it your greeting.
13 If the home is deserving, let your peace rest on it; if it is not, let your peace return to you.
14 If anyone will not welcome you or listen to your words, shake the dust off your feet when you leave that home or town.
15 I tell you the truth, it will be more bearable for Sodom and Gomorrah on the day of judgment than for that town.