Numbers 9:19-22

19Even when the cloud stayed over the tabernacle many days, the Israelites carried out the Lord’s requirement and did not set out.

20Sometimes the cloud remained over the tabernacle for only a few days. 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; when the cloud lifted in the morning, they set out. Or if it remained a day and a night, they moved out when the cloud lifted.

22Whether it was two days, a month, or longer, the Israelites camped and did not set out as long as the cloud stayed over the tabernacle. But when it was lifted, they set out.