Exodus 24:16-18

Amplified Bible, Classic Edition

¹⁶ The glory of the Lord rested on Mount Sinai, and the cloud covered it for six days. On the seventh day [God] called to Moses out of the midst of the cloud.

¹⁷ And the glory of the Lord appeared to the Israelites like devouring fire on the top of the mountain.

¹⁸ Moses entered into the midst of the cloud and went up the mountain, and Moses was on the mountain forty days and nights.