After the events with Aaron’s sons, Adonai outlines the regulations for entering the Holy of Holies behind the Holy Curtain in front of the Ark of the Covenant. Aaron was not allowed to come in just any time because Ehyeh Asher Ehyeh appears in the cloud over the kapparah. He was only allowed to enter on Yom Kippur, the day of atoning for the sins of Isra’el, the priesthood, and the Tabernacle; it was a solemn day of fasting.
"Your eyes will see Jerusalem: A tent which will not be folded; its stakes will never be pulled up" (Isaiah 33:20).
