The theme of the Day of Atonement is reconciliation, becoming at one with God through the forgiveness of sin. It starts the salvation process off. Each year, on the Day of Atonement, Israel's sins were symbolically transferred to the Tabernacle by having the first goat's blood sprinkled on it. The blood symbolically contained their sins. The blood was sprinkled on the Mercy Seat, transferring their sins, then, to God's throne, where they were forgiven. That is the picture behind this.
So the author says that the Tabernacle, all of its furniture, and all of its ceremonies and rituals used to accomplish atonement (at-one-ment) with God were types. These symbols stood in their place with good purpose, but only until they were replaced with a more effective reality. Christ went into the Holy of Holies with His own blood.
Now we need to put this into a bigger context, the whole book of Hebrews. The overall theme of Hebrews can be described by such words as better, superior, greater. Chapter 1 begins by telling us that Christ is greater than angels. Chapter 2 shows us that the goal given to us in the gospel of the Kingdom of God is so far superior to anything man has ever been offered before that there is no comparison.
In chapter 3, Christ is far greater than Moses. Beginning in chapter 4 and on into chapter 6, the comparison is made with Aaron, and again, Christ is greater. In chapter 7, we find a comparison with the Melchizedek priesthood and the Levitical priesthood. The Melchizedek priesthood is greater, superior, better than Aaron's.
In chapter 8, the covenant is introduced. The New Covenant is superior to the Old Covenant. The theme continues right on into chapters 9 and 10, because they are concerned with the superiority of the sacrifice of Christ to the things of the Old Testament - the Tabernacle, its furniture, and all of its ceremonial systems. But they were only imposed for a time, until something better was provided by God. It is clear, then, that God's intent with the sacrificial system was that it would only be imposed temporarily.