Exodus 24:12-18

12Then Adonai said to Moses, “Come up to Me on the mountain and stay there, and I will give you the tablets of stone with the Torah and the mitzvot, which I have written so that you may instruct them.”

13So Moses rose up along with his attendant Joshua, and Moses went up onto the mountain of God.

14To the elders he said, “Wait for us here until we come back to you. See, Aaron and Hur are with you—whoever has a dispute should go to them.”

15When Moses went up on the mountain, the cloud covered it.

16The glory of Adonai settled upon Mount Sinai, and the cloud covered it for six days. Then on the seventh day He called to Moses out of the midst of the cloud.

17The appearance of the glory of Adonai was like a consuming fire on the top of the mountain in the sight of Bnei-Yisrael.

18So Moses entered into the midst of the cloud and went up onto the mountain. Moses was on the mountain 40 days and 40 nights.