Numbers 9:15-17

15On the day that the tabernacle, the Tent of the Testimony, was set up, the cloud covered it and appeared like fire above the tabernacle from evening until morning. 16It remained that way continually; the cloud would cover the tabernacle by day,1 and at night it would appear like fire. 17Whenever the cloud was lifted from above the Tent, the Israelites would set out, and wherever the cloud settled, there the Israelites would camp.