Exodus 40:38 DBY

³⁶  And when the cloud was taken up from over the tabernacle, the children of Israel journeyed in all their journeys.

³⁷  And if the cloud were not taken up, then they did not journey until the day that it was taken up.

³⁸  For the cloud of Jehovah was on the tabernacle by day, and fire was in it by night, before the eyes of all the house of Israel, throughout all their journeys.