Numbers 9:19-21

Young's Literal Translation

¹⁹ And in the cloud prolonging itself over the tabernacle many days, then have the sons of Israel kept the charge of Jehovah, and journey not,

²⁰ and so when the cloud is a number of days over the tabernacle; by the command of Jehovah they encamp, and by the command of Jehovah they journey.

²¹ And so when the cloud is from evening till morning, when the cloud hath gone up in the morning, then they have journeyed; whether by day or by night, when the cloud hath gone up, then they have journeyed.