Then the sixth angel sounded his trumpet, and I heard a voice from the four horns of the golden altar before God
Textus Receptus (TR) - Revelation 9:13 >Καὶ ὁ ἕκτος ἄγγελος ἐσάλπισε, καὶ ἤκουσα φωνὴν μίαν ἐκ τῶν τεσσάρων κεράτων τοῦ θυσιαστηρίου τοῦ χρυσοῦ τοῦ ἐνώπιον τοῦ Θεοῦ,