The Israelites finish building the Temple in the desert, the dwelling place for God amongst them. The cloud of Glory of Adonai fills the Temple and Moses cannot enter it! It is a moment of Crisis – the Israelites just finished a huge endeavor building God a Sanctuary so God can dwell amongst them. And at the end, God comes and they are not let in.
It will be resolved next week, as we begin Leviticus – stay tuned!