Exodus 19:12

“And thou shall set bounds to the people round about, etc.] That is, round about the mountain, by drawing a line, throwing up a foss or ditch, or else by laying up heaps of stones or sand, which might be come at easily, or bushes and branches of trees, which grew thick on the mount, from whence it had its name; but be it what will that were used, these were to signify, that so far the people might go, but no further, which their curiosity might prompt them to: saying, take heed unto yourselves that ye go not up into the mount; so far were they from being allowed to go up to the top of it, that they were not allowed to ascend it at all, or to go any further than where the ascent or rise began;…”

“Set bounds unto the people - The low line of alluvial mounds at the foot of the cliff of Ras Safsafeh exactly answers to the bounds which were to keep the people off from touching the mount: but the bounds here spoken of were to be set up by Moses. return to 'Top of Page'”

“Set bounds - Probably he drew a ditch round at the foot of the hill, which none were to pass upon pain of death. This was to intimate, 1st, That awful reverence which ought to possess the minds of all that worship God. 2dly, The distance which worshippers were kept at under that dispensation, which we ought to take notice of, that we may the more value our privilege under the gospel, having boldness to enter into the holiest by the blood of Jesus, Heb 10:19. Exodus 19:13”

“set bounds: Exo 19:21, Exo 19:23; Jos 3:4 Take: Exo 10:28, Exo 34:12; Deu 2:4, Deu 4:9 or touch: Heb 12:20, Heb 12:21 Exodus 19:13”