Luke 10:1, 9, 11

After these things the Lord appointed other seventy also, and sent them two and two before his face into every city and place, whither he himself would come.

and heal the sick that are therein, and say unto them, The kingdom of God is come nigh unto you.

Even the very dust of your city, which cleaveth on us, we do wipe off against you: notwithstanding be ye sure of this, that the kingdom of God is come nigh unto you.