Numbers 9:19-22

19Even when the cloud lingered over the tabernacle for many days, the Israelites would keep their obligation to the Lord and not set out.

20Sometimes the cloud remained only a few days over the tabernacle, and in accordance with the command of the Lord they remained camped. Then at His command they set out.

21If sometimes the cloud remained [over the tabernacle] from evening only until morning, when the cloud was lifted in the morning, they would journey on; whether in the daytime or at night, whenever the cloud was lifted, they would set out.

22Whether it was two days or a month or a year that the cloud [of the Lord’s presence] lingered over the tabernacle, staying above it, the Israelites remained camped and did not set out; but when it was lifted, they set out.