Even the very dust of your city, which cleaves on us, we do wipe off against you: nevertheless be sure of this, that the kingdom of God has come near unto you.
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Tertullian of Carthage
AD 220
He likewise adds, that they should say to such as would not receive them: "Notwithstanding be ye sure of this, that the kingdom of God is come nigh unto you.".
any other sort of communication with them.