Exodus 24:18

24:18 Moses went into the cloud when he went up the mountain, and Moses was on the mountain forty days and forty nights.

Exodus 29:38-42

29:38 “Now this is what you are to prepare on the altar every day continually: two lambs a year old. 29:39 The first lamb you are to prepare in the morning, and the second lamb you are to prepare around sundown. 29:40 With the first lamb offer a tenth of an ephah of fine flour mixed with a fourth of a hin of oil from pressed olives, and a fourth of a hin of wine as a drink offering. 29:41 The second lamb you are to offer around sundown; you are to prepare for it the same meal offering as for the morning and the same drink offering, for a soothing aroma, an offering made by fire to the Lord.

29:42 “This will be a regular burnt offering throughout your generations at the entrance of the tent of meeting before the Lord, where I will meet with you to speak to you there.

Exodus 31:18

31:18 He gave Moses two tablets of testimony when he had finished speaking with him on Mount Sinai, tablets of stone written by the finger of God.