Elsewhere in N.T. only Heb 11:28 and Col 2:21. lxx only Exo 19:12. It implies a touching or grasping which affects the object (comp. Heb 12:18 on ψηλαφᾶν). In Class. often of touching or handling some sacred object which may be desecrated by the one who lays hands on it. See Soph. Philoct. 667; Oed. Tyr. 891, 899. So here, the touch of the mountain was profanation.
Shall be stoned (λιθοβολήσεται)
Found in Matthew, Luke, and Acts. In lxx see Exo 19:13. Comp. ἐλιθάσθησαν, Heb 11:37. The correct text omits or thrust through with a dart.