At the LORD’s command the Israelites set out, and at the LORD’s command they camped. As long as the cloud remained over the tabernacle, they remained encamped.
Jewish Publication Society of America Version (JPS1917) - Numbers 9:18 >At the commandment of the LORD the children of Israel journeyed, and at the commandment of the LORD they encamped: as long as the cloud abode upon the tabernacle they remained encamped.