Exodus 40:38 in the World English Bible
For the cloud of the LORD was on the tabernacle by day, and there was fire in the cloud by night, in the sight of all the house of Israel, throughout all their journeys.
Context
37 But if the cloud were not taken up, then they journeyed not till the day that it was taken up.
38 For the cloud of the LORD was upon the tabernacle by day, and fire was on it by night, in the sight of all the house of Israel, throughout all their journeys.