Exodus 40:34-38 Revised Standard Version (RSV)
The Cloud and the Glory
34 Then the cloud covered the tent of meeting, and the glory of the Lord filled the tabernacle. 35 And Moses was not able to enter the tent of meeting, because the cloud abode upon it, and the glory of the Lord filled the tabernacle. 36 Throughout all their journeys, whenever the cloud was taken up from over the tabernacle, the people of Israel would go onward; 37 but if the cloud was not taken up, then they did not go onward till the day that it was taken up. 38 For throughout all their journeys the cloud of the Lord was upon the tabernacle by day, and fire was in it by night, in the sight of all the house of Israel.