Didache

Whosoever therefore shall come and teach you all these things that have been said before, receive him;

Ὃς ἂν οὑν ἐλθὼν διδάξῃ ὑμᾶς ταῦτα πάντα τὰ προειρημένα, δέξασθε αὐτόν:

but if the teacher himself be perverted and teach a different doctrine to the destruction thereof, hear him not; but if to the increase of righteousness and the knowledge of the Lord, receive him as the Lord.

ἐὰν δὲ αὐτὸς ὁ διδάσκων στραφεὶς διδάσκῃ ἄλλην διδαχὴν εἰς τὸ καταλῦσαι, μὴ αὐτοῦ ἀκούσητε: εἰς δὲ τὸ προσθεῖναι δικαιοσύνην καὶ γνῶσιν κυρίου, δέξασθε αὐτὸν ὡς κύριον.