Psalms 102:20

εὐλογεῖτε τὸν κύριον πάντες οἱ ἄγγελοι αὐτοῦ δυνατοὶ ἰσχύι ποιοῦντες τὸν λόγον αὐτοῦ τοῦ ἀκοῦσαι τῆς φωνῆς τῶν λόγων αὐτοῦ