Shared ground
These verses present a carefully ordered ritual for the Day of Atonement focused on the sanctuary itself, not only on individual worshipers. The text is explicit that Aaron first offers a bull for himself and his household, then enters behind the veil with burning incense, and only then applies blood in the innermost area (vv. 11–15).
The passage also clearly links Israel’s ongoing “uncleanness,” “transgressions,” and “sins” with the need to “make atonement” for the holy place, the tent of meeting, and the outer altar (vv. 16, 18–19). In other words, the people’s condition is portrayed as affecting the space where God’s presence is hosted “in the midst of their uncleanness” (v. 16). Blood application is repeatedly described as the means by which atonement, cleansing, and renewed holiness of the worship space are achieved (vv. 14–16, 18–19; blood, atonement).
Where interpretation differs
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What “make atonement” is doing at each step. Many agree it includes cleansing the sanctuary from pollution connected to Israel’s sins. Some further say it also signals that God’s anger is turned away, so “atonement” includes both cleansing and restoring fellowship. Others keep the focus narrower: the sanctuary is being purified so it remains a fit place for God to dwell among the people.
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How to understand the sanctuary being affected by the people’s wrongdoing. Some read this as almost “contamination” building up in the sanctuary over time, requiring an annual purging. Others read it more relationally: the ritual addresses the fact that a holy God is present among a morally and ritually fragile people; the rites maintain the boundary so the people are not destroyed.
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Whether “cleanse” and “make it holy” name two different results or one combined result. Some treat these as two stages (removing defilement, then re-consecrating). Others see them as overlapping ways to describe a single outcome: the altar is restored to proper sacred status.
Why the disagreement exists
The same verb for “make atonement” is used for persons (vv. 11, 17) and for places/objects (vv. 16, 18). That raises the question of whether the action has a single meaning everywhere or shifts with the object. Also, the text combines moral terms (“transgressions,” “sins”) with purity language (“uncleanness”), and readers differ on how tightly those ideas are meant to merge here.
What this passage clearly contributes
The passage contributes a picture of holiness as something that must be guarded and maintained when God dwells near a community that regularly becomes unclean and commits wrong. It also stresses ordered access to the inner sanctuary: incense creates a protective cloud so Aaron does not die (v. 13), and only the high priest may be present during the inner rites (v. 17). Finally, it presents blood rites as the text’s stated means of making atonement for the worship center—from the mercy seat area outward to the altar—resulting in the altar being “cleansed” and “made holy” from Israel’s uncleanness (vv. 14–16, 18–19; Leviticus 16:11–19).