Epistle of Barnabas 18

1But let us now pass to another sort of knowledge and doctrine. There are two ways of doctrine and authority, the one of light, and the other of darkness. But there is a great difference between these two ways. For over one are stationed the light-bringing angels of God, but over the other the angels of Satan. And He indeed (_i.e._ God) is Lord for ever and ever, but he (_i.e._ Satan) is prince of the time of iniquity.
Μεταβώμεν δὲ καὶ ἐπὶ ἑτέραν γνῶσιν καὶ διδα- χήν. ‘Odol δύο εἰσὶν διδαχῆς καὶ ἐξουσίας, ἥ τε τοῦ φωτὸς καὶ ἡ τοῦ σκότους. διαφορὰ δὲ πολλὴ τῶν δύο ὁδῶν. ἐφ᾽ ἧς μὲν γάρ εἰσιν τεταγμένοι φωταγωγοὶ ἄγγελοι τοῦ Θεοῦ, ἐφ᾽ ἧς δὲ ἄγγελοι τοῦ Σατανᾶ. καὶ ὁ μέν ἐστιν Κύριος ἀπὸ αἰώνων καὶ εἰς τοὺς αἰῶνας, ὁ δὲ ἄρχων καιροῦ τοῦ νῦν τῆς ἀνομίας.