But the Levites are to set up their camp around the Tabernacle of the Testimony to prevent anyone from making me angry with the Israelites. The Levites are responsible for looking after the Tabernacle of the Testimony.”
The Israelites did everything the Lord had ordered Moses. They set up their camps under their flags in their assigned positions, and marched out in the same order, each with their own tribe and family.
If the cloud stayed in one place for two days, or a month, or longer, the Israelites stayed where they were and didn't leave as long as the cloud remained over the Tabernacle. However, once it rose, they would leave.
So they kept the Passover in the Sinai desert, beginning in the evening after sunset on the fourteenth day of the first month. The Israelites followed all the instructions the Lord had given to Moses.
“Does the Lord prefer burnt offerings and sacrifices, or obedience to what he says?” Samuel asked. “Listen! Obedience is better than sacrifice. Paying attention is more important than offering the fat of rams.