Exodus 40:36-38

Leeser(i) 36 And when the cloud was taken up from over the tabernacle, the children of Israel were wont to go onward in all their journeyings. 37 But if the cloud was not taken up, then they journeyed not till the day that is was taken up. 38 For the cloud of the Lord was upon the tabernacle by day, and a fire was by night on it, before the eyes of all the house of Israel, throughout all their journeyings.