Numbers 9:19-22

19Even when the cloud lingered over the tabernacle for many days, the Israelites kept the LORD’s charge and did not set out. 20Sometimes the cloud remained over the tabernacle for only a few days, and they would camp at the LORD’s command and set out at the LORD’s command. 21Sometimes the cloud remained only from evening until morning, and when it lifted in the morning, they would set out. Whether it was by day or by night, when the cloud was taken up, they would set out.

22Whether the cloud lingered for two days, a month, or longer, the Israelites camped and did not set out as long as the cloud remained over the tabernacle; but when it was lifted, they would set out.