The book of Hebrews is a book about the centrality of Christ. The Jewish economy, feasts and rituals served as types and shadows of the plan of salvation as it is encapsulated in Christ, the substance of all their shadows.
The book of Hebrews links the Old and the New Testaments into a harmonious whole and serves as a road map of the plan of salvation and if heeded would guard against the many pitfalls that encumber the proclamation of the Gospel for our time.