Read Hebrews 8
Building on the notion that Jesus is the fulfillment of an ancient priesthood, established by Melchizedek, and that this priesthood also has Kingly “intonations” which are also fulfilled by Jesus, the author moves ahead to point to Jesus as also fulfilled the old covenant while also establishing a new covenant.
There are a number of things that make the writer points to as being superior about that which is established by Jesus. His priesthood is eternal because Jesus Christ is the eternal God, the resurrected Lord, who lives and reigns forever. He is seated at the right hand of God and Scripture tells us that Jesus is forever interceding for us. Whereas the priests of the Old Testament had to continually offer sacrifices for the sins of the people as well as worship God in the earthly sanctuary built for Him, Jesus fulfills these roles perfectly both on earth and in heaven before the presence of God.
All of these things, the author points out, are shadows of what was to come in Jesus. Though at the time they carried great meaning for the people, they now give meaning to Jesus’ life, work, and position in redemptive history. Jesus’ sacrifice means a lot, but it gains its deep meaning and from the Hebrew sacrificial system that was performed for many years and set up by the law.
In the same way, the Tabernacle and the Temple were built in such a way to be a shadow of the true Temple of God in heaven, God’s true dwelling place. There was a need for them to be built in such a way as to do this well on earth, but their meaning and purpose point to the greater reality of God in heaven and of the work of Jesus Christ to bring salvation to the world and to reconcile all things which will reach its greatest and true fulfillment when Christ comes again.