Parallel
Revelation 9:13
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Καὶ ὁ ἕκτος ἄγγελος ἐσάλπισεν, καὶ ἤκουσα φωνὴν μίαν ἐκ τῶν τεσσάρων κεράτων τοῦ θυσιαστηρίου τοῦ χρυσοῦ τοῦ ἐνώπιον τοῦ θεοῦ,
Then the sixth angel sounded his trumpet, and I heard a voice from the four horns of the golden altar before God