Exodus 24:15

Overview - Exodus 24
1	Moses is called up into the mountain.
3	The people promise obedience.
4	Moses builds an altar, and twelve pillars.
6	He sprinkles the blood of the covenant.
9	The glory of God appears.
14	Aaron and Hur have the charge of the people.
15	Moses goes into the mountain, where he continues forty days and forty nights.

Exodus 24:15  (King James Version)
And Moses went up into the mount, and a cloud covered the mount.