2 Corinthians 11:14

14Andκαὶnoοὐwonderθαῦμα,himselfαὐτὸςforγὰρὁSatanΣατανᾶςmasqueradesμετασχηματίζεταιasεἰςan angelἄγγελονof lightφωτός·

And no wonder, for Satan himself disguises himself as an angel of light.