Numbers 9:18 YLT

¹⁶  so it is continually; the cloud covereth it, also the appearance of fire by night.

¹⁷  And according to the going up of the cloud from off the tent and afterwards do the sons of Israel journey; and in the place where the cloud doth tabernacle, there do the sons of Israel encamp;

¹⁸  by the command of Jehovah the sons of Israel journey, and by the command of Jehovah they encamp; all the days that the cloud doth tabernacle over the tabernacle they encamp.

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.