Now the first [covenant] also had regulations for ministry and an earthly sanctuary.
References for Hebrews 9:1
For a tabernacle was set up; and in the first room, which is called "the holy place," were the lampstand, the table, and the presentation loaves.
References for Hebrews 9:2
Behind the second curtain, the tabernacle was called "the holy of holies."
It contained the gold altar of incense and the ark of the covenant, covered with gold on all sides, in which there was a gold jar containing the manna, Aaron's rod that budded, and the tablets of the covenant.
The cherubim of glory were above it overshadowing the mercy seat. It is not possible to speak about these things in detail right now.
These things having been set up this way, the priests enter the first room repeatedly, performing their ministry.
But the high priest alone enters the second room, and that only once a year, and never without blood, which he offers for himself and for the sins of the people committed in ignorance.
References for Hebrews 9:7
The Holy Spirit was making it clear that the way into the holy of holies had not yet been disclosed while the first tabernacle was still standing.
This is a symbol for the present time, during which gifts and sacrifices are offered that cannot perfect the worshiper's conscience.
They are physical regulations and only deal with food, drink, and various washings imposed until the time of restoration.