Shared ground
These verses describe a carefully staged installation ritual for Aaron and his sons. They identify with the second ram by placing their hands on its head, the ram is killed, and its blood is used to mark both the men and the altar (vv. 19–20). A second application follows: blood associated with the altar is combined with anointing oil and sprinkled on the priests and their garments, with the stated result that they and their clothing are treated as “made holy,” meaning set apart for sanctuary service (v. 21).
The text also explains how parts of the ram and accompanying bread are handled. Certain fat portions, the right thigh, and three bread items are placed into the priests’ hands, “waved” before Yahweh, then burned on the altar (vv. 22–25). Finally, it establishes portions: the breast is waved and assigned to Moses (v. 26), and the “breast” and “thigh” are set apart as ongoing priestly portions from Israel’s offerings (vv. 27–28).
Where interpretation differs (only where needed)
Why mark the right ear, right thumb, and right big toe? The text does not explain the symbolism. Many interpreters infer it represents dedication of hearing, working, and walking (whole-life service). Others are more cautious and say the main point is simply that key extremities are visibly marked to show authorized status for priestly duties.
What does “the blood that is on the altar” mean (v. 21)? Some read it as blood that has already been applied/splashed on the altar in v. 20, now taken from there for the oil-mixture sprinkling. Others read it as blood reserved for the altar (blood designated for altar use), not necessarily scraped from the altar surface. Either way, the narrative links altar-blood and priestly clothing in one sequence.
How do the “wave” and “heave/lift” actions relate, and which thigh is meant? The passage uses both “wave” and “heave/lift” language and mentions a “right thigh” (v. 22) and later a “thigh” (vv. 27–28). Some conclude the same piece is in view throughout but described from different angles (presentation gesture vs. assigned portion). Others think the text is distinguishing the thigh used in the altar-burning sequence from the thigh later set apart for priestly eating, and that the labeling is compressed.
Why the disagreement exists
The ritual steps are narrated quickly, with repeated “take” instructions and overlapping terms for gestures and portions. The text emphasizes what happens (marking, sprinkling, waving, burning, assigning) more than explaining mechanics or symbolism, which leaves room for reasonable reconstruction.
What this passage clearly contributes
It shows that priestly installation is not only about people but also about the altar and garments: blood touches bodies, the altar receives blood, and then blood-and-oil reaches clothing (vv. 20–21). It also ties priestly authority to a structured handling of offerings: certain parts go up in smoke as Yahweh’s portion (vv. 22–25), and certain parts become defined, ongoing priestly portions from Israel (vv. 26–28). The passage therefore grounds priesthood in publicly recognizable rites and in a stable system for distributing sacrificial portions.