God reminded Moses about keeping Passover, and the Hebrews tried to keep it according to all the rules, but things didn’t go completely smoothly, because some dudes complained that they weren’t allowed at the party because they were ritually unclean.
So Moses went and talked to God, and then came back with the great news that they could have a make-up Passover next month for anyone who wasn’t able to celebrate during the normal time. However, he also brought back the news that anyone able to celebrate at the normal time who didn’t, should be banished.
So anyway, back to Tabernacle party–God sat in the tent and hung out all night. After that, whenever God’s smoke cloud hovered near the Tabernacle, the Hebrews made camp and hung out, but whenever the smoke cloud took off, so did they.