Hebrews 9:6-9; Hebrews 9:13

6 These things having been set up this way, the priests enter the first room repeatedly, performing their ministry. 7 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. 8 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. 9 This is a symbol for the present time, during which gifts and sacrifices are offered that cannot perfect the worshiper's conscience.
13 For if the blood of goats and bulls and the ashes of a heifer sprinkling those who are defiled, sanctify for the purification of the flesh,