Exodus 24:16

“And the glory of the Lord abode upon Mount Sinai, etc.] The divine Shechinah or Majesty, some visible token of it, an exceeding great brightness and splendour: and the cloud covered it six days; either the glory of the Lord, so that it could not be seen it had been; or the mount, as Jarchi; but that is observed before, unless repeated for the sake of the time it covered it, six days; or him, Moses, as some in Jarchi, who for six days together was covered with a thick cloud, so that he was not seen by any while on the mountain; and thus he remained, until he was admitted into the immediate presence of God, for which he was now preparing: what he did, or was made known to him during this time,…”

“A cloud covered the mount six days - A visible token of God's special presence there, for he so shews himself to us, as at the same time to conceal himself from us, he lets us know so much as to assure us of his power and grace, but intimates to us that we cannot find him out to perfection. During these six days Moses staid waiting upon the mountain, for a call into the presence - chamber. And on the seventh day - Probably the sabbath - day, he called unto Moses. Now the thick cloud opened in the sight of all Israel, and the glory of the Lord broke forth like devouring fire. Exodus 24:18”

“the glory: Exo 24:17, Exo 16:10; Lev 9:23; Num 14:10, Num 16:42; Eze 1:28; Co2 4:6 seventh day: Exo 19:11, Exo 20:10; Rev 1:10 Exodus 24:17”