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.
Making all foods clean was not the purpose of Noah’s deliverance from the polluted world of the Nephilim nor was it the message of the Prophets(Moses), the Gospel preached by Yeshua or the Apostles. It was not the purpose of Peter’s vision nor the conclusion of the Council of Jerusalem.