Num Numbers, chapter Book of Numbers, chapter 9
And sometimes the cloud was a few days upon the tabernacle; then according to the commandment of Jehovah they remained encamped, and according to the commandment of Jehovah they journeyed. And sometimes the cloud was from evening until morning; and when the cloud was taken up in the morning, they journeyed: or if it continued by day and by night, when the cloud was taken up, they journeyed.