Shared ground
Leviticus 12:4 describes a second stage after the initial days of postpartum uncleanness mentioned just before. For thirty-three more days, the woman remains in an ongoing purification period connected to post-birth bleeding (explicit in the wording about “blood” and “purifying”).
The verse is also clear about the practical result: during that time she is restricted from contact with “holy” items and from entering the sanctuary. The limits are not open-ended; they last only until the counted days are completed (a time-based boundary).
Where interpretation differs
1) What “the blood of her purifying” means. Some read the phrase as referring straightforwardly to postpartum discharge. Others argue the wording is not focusing on “unclean blood” but on a “purification period,” using “blood” as a concrete way to name the postpartum state.
2) What “touch any holy thing” covers. Some take it narrowly (items dedicated for priestly or tabernacle use). Others take it more broadly (any consecrated food or objects that ordinary Israelites might encounter, such as certain offerings that could be eaten in a holy context).
3) What “come into the sanctuary” implies about normal access. Many read it as a direct prohibition from entering the tabernacle precincts. Others note that most Israelites would not normally enter the inner sanctuary anyway, so the line may function as a clear boundary-marker: whatever her normal participation was, it does not include approaching the sanctuary area during this period.
Why the disagreement exists
The verse uses short, compressed phrases (“blood of her purifying,” “holy thing,” “sanctuary”) that assume familiarity with Israel’s wider purity system in Leviticus 11–15. Because the verse doesn’t list examples, readers must infer scope from related laws about holy items, sacred space, and who normally handles them.
What this passage clearly contributes
This verse presents childbirth as a normal event that still requires a temporary, structured separation from the sanctuary sphere. It contributes a key idea in Leviticus’ purity material: certain bodily states create time-limited restrictions on handling holy things and approaching holy space, and restoration is tied to completing the specified “days” (Leviticus 12:4).