John Gills Exposition of the Bible Commentary - Exodus 19:13
There shall not a hand touch it ,.... The mountain or the border of it, which is repeated that it might be taken notice of; and to show that it would be resented if they were to stretch out their hand and only lightly touch it, much more should they set their feet upon it and attempt to ascend it: or rather, "shall not touch him" F15 לא תגע בש "non tanget eum", Vatablus, Drusius, "non feriet eum", Tigurine version. ; that is, the man that shall touch the mountain; he shall be so... read more
Matthew Henry's Complete Commentary - 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 (Exod. 19:9); for he said that he would dwell in the thick darkness (2 Chron. 6:1), and make this his pavilion (Ps. 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... read more