Correct.

Then Moses went up to the mountain, and the cloud covered the mountain. ¹⁶ And the glory of the LORD rested on Mount Sinai, and the cloud covered it for six days; and on the seventh day He called to Moses from the midst of the cloud. ¹⁷ And to the eyes of the sons of Israel the appearance of the glory of the LORD was like a consuming fire on the mountain top. ¹⁸ And Moses entered the midst of the cloud as he went up to the mountain; and Moses was on the mountain forty days and forty nights. Exodus 24:12-18 (NAS)