Exodus 24:16

And the glory of God came down upon the mount Sina, and the cloud covered it six days; and the Lord called Moses on the seventh day out of the midst of the cloud.

And the glory of the Lord abode upon mount Sinai, and the cloud covered it six days: and the seventh day he called unto Moses out of the midst of the cloud.

Yahweh’s glory settled on Mount Sinai, and the cloud covered it six days. The seventh day he called to Moses out of the middle of the cloud.