Hebrews 1:7

καὶ πρὸς μὲν τοὺς ἀγγέλους λέγει· ὁ ποιῶν τοὺς ἀγγέλους αὐτοῦ πνεύματα, καὶ τοὺς λειτουργοὺς αὐτοῦ πυρὸς φλόγα·