Hebrews 12:21

καί, οὕτως φοβερὸν ἦν τὸ φανταζόμενον, Μωϋσῆς εἶπεν, Ἔκφοβός εἰμι καὶ ἔντρομος.

kai, oytōs phoberon ēn to phantazomenon, Mōysēs eipen, Ekphobos eimi kai entromos.

King James Version (KJV)

And so terrible was the sight, that Moses said, I exceedingly fear and quake:)

Modern English

The sight was so terrifying that Moses said, I am trembling with fear.