mount. The texts omit.
that might, &c. = that was touched. Greek. pselaphao. The reference is to Exodus 19:16-19.
and. This and other five "ands" in verses: Hebrews 12:18; Hebrews 12:19 exemplify the Figure of speech Polysyndeton (App-6).
nor. and.
blackness. a thick cloud. Greek. gnophos. Only here.
darkness. Greek. skotos, but the texts read zophos. See 2 Peter 2:4; 2 Peter 2:17; Jude 1:6; Jude 1:13.
tempest. Greek. thuella. Only here.