Leviticus 16 depicts the high priest entering the inner sanctuary with sacrificial blood on the annual Day of Atonement. Hebrews 9 contrasts that repeated priestly entry with Christ appearing once in heaven itself to deal decisively with sin. The later passage explicitly interprets the Levitical sanctuary-and-atonement pattern in relation to Christ.

Hebrews 9 contrasts the high priest’s annual entry into the inner sanctuary with blood against Christ’s superior priestly work and self-offering. Leviticus 16 provides the central Torah ritual behind that contrast: restricted access, priestly mediation, blood, and repeated annual atonement. Hebrews explicitly interprets that system Christologically rather than merely borrowing generic sacrifice language.

Leviticus 16’s annually repeated Day of Atonement is a central background to Hebrews 10, where repeated sacrifices are contrasted with Christ’s once-for-all offering. Hebrews treats the recurring Levitical system as meaningful but unable to bring final perfection, then presents Jesus’ self-offering as decisive. The connection is inspired interpretation of a recurring canonical pattern.

15:31 warns that Israelite impurity can defile the tabernacle and lead to death; Chapter 16 immediately develops the sanctuary-purification/atonement system at the Day of Atonement.

The blood rites for priest and congregation offerings develop into the Day of Atonement’s larger sanctuary-cleansing ritual. The shared purification logic is clear, while the procedures should not be treated as identical.

Leviticus 16 uses sacrificial blood in the Day of Atonement rites that purify the sanctuary and address Israel’s sins. First John says the blood of Jesus Christ cleanses believers from all sin. The later text does not cite Leviticus 16 directly, but the shared cleansing-and-blood theology belongs to the broader biblical atonement trajectory and should be presented as canonical development.

Foreshadowing / mirroring — very strong but debated lexical-canonical echo: Romans 3:25 applies hilasterion to Christ; the Greek Old Testament uses hilasterion for the atonement cover or “mercy seat,” including the blood-sprinkled inner-sanctuary rite of Leviticus 16. The mercy-seat reading makes Christ the place/person of atonement and divine meeting, but Paul’s exact nuance remains debated.

Leviticus 16 requires the high priest to make atonement for himself as well as for the people during the Day of Atonement. Hebrews contrasts such priests, who must repeatedly offer and who share human weakness, with Jesus, the fitting high priest whose self-offering is once for all. The contrast uses the Levitical priesthood as real background without reducing every priestly offering to Leviticus 16 alone.