Numbers 9:15-17

On the day the Tabernacle was set up, the cloud covered it. But from evening until morning the cloud over the Tabernacle looked like a pillar of fire. This was the regular pattern—at night the cloud that covered the Tabernacle had the appearance of fire. Whenever the cloud lifted from over the sacred tent, the people of Israel would break camp and follow it. And wherever the cloud settled, the people of Israel would set up camp.