Luke 10:8-11

And into whatsoever city ye enter, and they receive you, eat such things as are set before you: and heal the sick that are therein, and say unto them, The kingdom of God is come nigh unto you. But into whatsoever city ye shall enter, and they receive you not, go out into the streets thereof and say, Even the dust from your city, that cleaveth to our feet, we wipe off against you: nevertheless know this, that the kingdom of God is come nigh.