Matthew Poole and continuators on Exodus 19:12

12 And thou shalt set bounds to the people round about, saying, Take heed to your selves, that ye go not up into the mount, or touch the border of it: whosoever toucheth the mount, shall be surely put to death .

By this symbolical injunction God designed. 1. to restrain mens curious and bold enquiries into the things of God. 2. to possess the Israelites then present and all succeeding generations with the dread and reverence of the Divine Majesty, and of his holy law. 3. to prepare and inure the people to the obedience of Gods commands, even when they discern not the reasons of them. 4. to make them sensible of their own impurity and infirmity, and of their absolute need of a Mediatour through whom they might have access to God. See Gal. 3. 19.

Marginal references: Heb. 12. 22.