Revelation 9:14

14sayingλέγονταto theτῷsixthἕκτῳangelἀγγέλῳ,the [one]ὁhavingἔχωνtheτὴνtrumpetσάλπιγγα·ReleaseΛῦσονtheτοὺςfourτέσσαραςangelsἀγγέλουςthoseτοὺςhaving been boundδεδεμένουςatἐπὶtheτῷriverποταμῷτῷgreatμεγάλῳEuphratesΕὐφράτῃ.

saying to the sixth angel, the one having the trumpet, “Release the four angels, those having been bound at the great river Euphrates.”