Shared ground
Leviticus 21:16–23 draws a clear boundary inside Aaron’s priesthood: a priest can truly belong to Aaron’s line and still be restricted from certain sanctuary actions. The repeated terms “approach/come near” and the spatial limits (“to the veil,” “near the altar”) show that the main issue is access to the most sensitive zones and duties, not expelling someone from the priestly family.
The text also balances restriction with provision. A priest with a listed “blemish” may still eat the holy and most holy portions (“the bread of his God”). So the passage limits a role at the sanctuary while maintaining priestly support and status in at least one important respect.
Where interpretation differs (only where needed)
Two main questions commonly produce different readings.
First, what does “approach” cover? Some read it as a narrow ban on altar-facing work and entering restricted spaces, based on v. 23’s explicit mention of the veil and altar. Others think it includes a wider range of public priestly duties connected with presenting offerings, even if not every task a priest might do.
Second, what is “the bread of his God”? Many take it as shorthand for the priestly food portions from sacrifices (supported by v. 22’s permission to eat holy food). Others think it can be a broader label for offerings generally, with v. 22 clarifying that the priest may still eat despite being barred from the offering-approach.
Why the disagreement exists
The passage uses a key verb (“approach/come near”) repeatedly without listing every priestly task it includes. Then v. 23 specifies two landmarks (veil, altar), which can be read either as defining the whole restriction or as naming the clearest examples of the restricted approach. Also, “bread” can mean literal food, but it can also function as a conventional way of speaking about offerings given to God.
What this passage clearly contributes
Explicitly, the text says (1) the rule applies to Aaron’s descendants “throughout their generations,” (2) certain physical conditions are treated as “blemishes” for purposes of sanctuary approach, (3) the restriction is tied to not “profan[ing]” God’s sanctuaries, and (4) restricted priests still receive holy food. Theologically (as inference), it portrays the sanctuary as a graded holy space where not every legitimate priest performs every duty, and it distinguishes between belonging, provision, and proximity to the most symbolically intense acts of worship (Leviticus 21:16–23).