Ignatius of Antioch, Epistle to the Magnesians 2.8
Do not be led astray by false teachings or by old myths, which are worthless. For if we still live according to Judaism, we are admitting that we have not received grace.
The most divine prophets lived according to Christ Jesus. That is why they were persecuted: they were inspired by his grace so that the disobedient might be fully convinced that there is one God, who revealed himself through Jesus Christ his Son, who is his Word, who came forth from silence, and who in every way pleased the one who sent him.
Greek
Μὴ πλανᾶσθε ταῖς ἑτεροδοξίαις μηδὲ μυθεύμασιν τοῖς παλαιοῖς ἀνωφελέσιν οὖσιν. εἰ γὰρ μέχρι νῦν κατὰ Ἰουδαῖσμὸν ζῶμεν, ὁμολογοῦμεν χάριν μὴ εἰληφέναι.
οἱ γὰρ θειότατοι προφῆται κατὰ Χριστὸν Ἰησοῦν ἔζησαν. διὰ τοῦτο καὶ ἐδιώχθησαν, ἐνπνεόμενοι ὑπὸ τῆς χάριτος αὐτοῦ, εἰς τὸ πληροφορηθῆναι τοὺς ἀπειθοῦντας, ὅτι εἶς θεός ἐστιν, ὁ φανερώσας ἑαυτὸν διὰ Ἰησοῦ Χριστοῦ τοῦ υἱοῦ αὐτοῦ, ὅς ἐστιν αὐτοῦ λόγος ἁπὸ σιγῆς προελθών, ὃς κατὰ πάντα εὐηρέστησεν τῷ πέμψαντι αὐτόν.