9thatἵναnotμὴ[I] might seemδόξωas ifὡςἂνto frightenἐκφοβεῖνyouὑμᾶςby means ofδιὰtheτῶνlettersἐπιστολῶν·
so that I might not seem as if to frighten you⁺ through the letters.
ἐκφοβεῖν
ἐκφοβέω
I frighten away, terrify.