"Whenever you enter someone's home, first say, 'May God's peace be on this house.' If those who live there are peaceful, the blessing will stand; if they are not, the blessing will return to you...

"If you enter a town and it welcomes you, eat whatever is set before you. Heal the sick, and tell them, 'The Kingdom of God is near you now.' But if the town refuses to welcome you, go out into its streets and say, 'We wipe even the dust of your town from our feet to show we have abandoned you to your fate.

And know this--the Kingdom of God is near!' I assure you, even the wicked Sodom will be better off than such a town on judgement day."

-Luke 10:5