Inside the ark were 3 things. The 2 tables of the Law. A golden pot of manna and Aaron's rod that budded. The Ark of the Covenant was where Gods justice and judgement toward sin was satisfied. Until Jesus Christ
The heritage of the priestly ministry. It is amazing how close to the ancient priestly vestments our current vestments are. Hebrews For it is declared: "You are a priest forever, in the order of Melchizedek.
Study the meanings of the Jewish high priestly garments. Revelations 1 says that Jesus has made His people " a kingdom and priests to God the Father and of our Lord Jesus Christ. Every part of the priestly garments have very deep meaning.