Revelation 11:15 Καὶ ὁ ἕβδομος ἄγγελος ἐσάλπισεν καὶ ἐγένοντο φωναὶ μεγάλαι ἐν τῷ οὐρανῷ λέγοντες, ἐγένετο ἡ βασιλεία τοῦ κόσμου τοῦ κυρίου ἡμῶν καὶ τοῦ Χριστοῦ αὐτοῦ καὶ βασιλεύσει εἰς τοὺς αἰῶνας τῶν αἰώνων.
The seventh angel sounded, and great voices in heaven followed, saying, "The kingdom of the world has become the Kingdom of our Lord, and of his Christ. He will reign forever and ever!"
Adjective: Nominative Singular Masculine

Revelation 16:17 Καὶ ὁ ἕβδομος ἐξέχεεν τὴν φιάλην αὐτοῦ ἐπὶ τὸν ἀέρα, καὶ ἐξῆλθεν φωνὴ μεγάλη ἐκ τοῦ ναοῦ ἀπὸ τοῦ θρόνου λέγουσα, γέγονεν.
The seventh poured out his bowl into the air. A loud voice came forth out of the temple of heaven, from the throne, saying, "It is done!"
Adjective: Nominative Singular Masculine

Revelation 21:20 ὁ πέμπτος σαρδόνυξ, ὁ ἕκτος σάρδιον, ὁ ἕβδομος χρυσόλιθος, ὁ ὄγδοος βήρυλλος, ὁ ἔνατος τοπάζιον, ὁ δέκατος χρυσόπρασος, ὁ ἑνδέκατος ὑάκινθος, ὁ δωδέκατος ἀμέθυστος,
the fifth, sardonyx; the sixth, sardius; the seventh, chrysolite; the eighth, beryl; the ninth, topaz; the tenth, chrysoprasus; the eleventh, jacinth; and the twelfth, amethyst.
Adjective: Nominative Singular Masculine