Matthew Henry on Exodus 19:9-15
Here, I. God intimates to Moses his purpose of coming down upon mount Sinai, in some visible appearance of his glory, in a thick cloud (Exo 19:9); for he said that he would dwell in the thick darkness (Ch2 6:1), and make this his pavilion (Psa 18:11), holding back the face of his throne when he set it upon mount Sinai, and spreading a cloud upon it, Job 26:9. This thick cloud was to prohibit curious enquiries into things secret, and to command an awful adoration of that which was revealed. God would come down in the sight of all the people (Exo 19:11); though they should see no manner of similitude, yet they should see so much as would convince them that God was among them of a truth. And so…
Read the whole note in the consoleJamieson-Fausset-Brown on Exodus 19:9
The Lord said unto Moses, Lo, I come . . . in a thick cloud, &c.--The deepest impressions are made on the mind through the medium of the senses; and so He who knew what was in man signalized His descent at the inauguration of the ancient church, by all the sensible tokens of august majesty that were fitted to produce the conviction that He is the great and terrible God. The whole multitude must have anticipated the event with feelings of intense solemnity and awe. The extraordinary preparations enjoined, the ablutions and rigid abstinence they were required to observe, the barriers erected all round the base of the mount, and the stern penalties annexed to the breach of any of the conditions…
Read the whole note in the consoleAdam Clarke on Exodus 19:13
There shall not a hand touch it - בו bo, Him, not the mountain, but the man who had presumed to touch the mountain. He should be considered altogether as an unclean and accursed thing, not to be touched for fear of conveying defilement; but should be immediately stoned or pierced through with a dart, Heb 12:20.
John Gill on Exodus 19:14
And Moses went down from the mount unto the people,.... The same day that he went up, the fourth day of the month:
and sanctified the people; instructed them and ordered them what they should do for their sanctification, in order to their hearing the law from the mouth of the Lord:
and they washed their clothes; as the Lord had directed Moses to enjoin them, and as he had commanded them; see Gill on Exodus 19:10.