Ignatius — Epistle to the Magnesians 4
It is fitting, then, not only to bear the name of Christians but to be Christians, just as some do call a man bishop, yet do everything without him. Such people do not seem to me to have a clean conscience, for they do not gather validly, as the commandment requires.
Greek
Πρέπον οὖν ἐστιν μὴ μόνον καλεῖσθαι Χρις τιανούς, ἀλλὰ καὶ εἶναι: ὥσπερ καί τινες ἐπίσκοπον μὲν καλοῦσιν, χωρὶς δὲ αὐτοῦ πάντα πράσσουσιν. οἱ τοιοῦτοι δὲ οὐκ εὐσυνείδητοί μοι εἶναι φαίνονται διὰ τὸ μὴ βεβαίως κατ’ ἐντολὴν συναθροίζεσθαι.