Exodus 24:16-18 New Life Version (NLV)
16 The shining-greatness of the Lord rested on Mount Sinai. And the cloud covered it for six days. On the seventh day He called to Moses from the cloud. 17 To the people of Israel, the shining-greatness of the Lord looked like a fire that destroys on the mountain top. 18 Moses went into the cloud as he went up on the mountain. And Moses was on the mountain forty days and forty nights.