Parallel
Revelation 9:13
Nestle 1904 Greek New Testament · 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