I come unto thee in a thick cloud— This thick cloud, as appears from Exodus 19:16, &c. implies all those awful demonstrations which accompanied the Divine Presence; and, in this view, the reason here subjoined for God's coming in this thick cloud, is manifest: that the people, hearing the Almighty converse with Moses from the midst of these alarming terrors, might be fully convinced of the Divine Presence and intercourse with Moses; and, consequently, believe, and receive as sacred, what he delivered to them from GOD.
Related Commentaries of Exodus 19:9
Exodus 19:9
9 And the LORD said unto Moses, Lo, I come unto thee in a thick cloud, that the people may hear when I speak with thee, and believe thee for ever. And Moses told the words of the people unto the LORD.