Hebrews 9:7-9

7But the high priest alone enters the second room, and he does that only once a year, and never without blood, which he offers for himself and for the sins the people had committed in ignorance.

8The Holy Spirit was making it clear that the way into the most holy place had not yet been disclosed while the first tabernacle was still standing.

9This is a symbol for the present time, during which gifts and sacrifices are offered that cannot perfect the worshiper’s conscience.