Parallel
Hebrews 12:21
Patriarchal Greek New Testament (1904) · Berean Standard Bible
καί· οὕτω φοβερὸν ἦν τὸ φανταζόμενον! Μωϋσῆς εἶπεν· ἔκφοβός εἰμι καὶ ἔντρομος·
The sight was so terrifying that even Moses said, “I am trembling with fear (note: Deuteronomy 9:19).”