Ignatius — Epistle to the Philadelphians 2
Wherefore, as children of light and truth, flee from division and wicked doctrines; but where the shepherd is, there follow as sheep. For there are many wolves that appear worthy of credit, who, by means of a pernicious pleasure, carry captive 2 Timothy 3:6 those that are running towards God; but in your unity they shall have no place.
Greek
Τέκνα οὖν φωτὸς ἀληθείας, φεύγετε τὸν μερισμὸν καὶ τὰς κακοδιδασκαλίας: ὅπου δὲ ὁ ποιμήν ἐστιν, ἐκεῖ ὡς πρόβατα ἀκολουθεῖτε. πολλοὶ γὰρ λύκοι ἀξιόπιστοι ἡδονῇ κακῇ αἰχμαλωτίζουσιν τοὺς θεοδρόμους: ἀλλ’ ἐν τῇ ἑνότητι ὑμῶν οὐχ ἕξουσιν τόπον.