Ignatius to the Ephesians

For some are wont of malicious guile to hawk about the Name, while they do certain other things unworthy of God. These men ye ought to shun, as wild-beasts; for they are mad dogs, biting by stealth; against whom ye ought to be on your guard, for they are hard to heal.

Εἰώθασιν γάρ τινες δόλῳ πονηρῷ τὸ ὄνομα περιφέρειν, ἄλλα τινὰ πράσσοντες ἀνάξια θεοῦ: οὕς δεῖ ὑμᾶς ὡς θηρία ἐκκλίνειν: εἰσὶν γὰρ κύνες λυσσῶντες, λαθροδῆκται: οὓς δεῖ ὑμᾶς φυλάσσεσθαι ὄντας δυσθεραπεύτους.

There is one only physician, of flesh and of spirit, generate and in- generate, God in man, true Life in death, Son of Mary and Son of God, first passible and then impassible, Jesus Christ our Lord.