עזרא, פרק ב׳, פסוק ס״ב

Upon the return to Zion, restoring the purity of the Temple service became a critical priority. This required a strict verification of the ancestral lineage of the priestly families. Anyone claiming to be a priest had to prove their status, and those unable to present clear evidence were suspended from sacred duties.

To validate their standing, certain individuals searched for official genealogical records and documents detailing their family history to prove they were legitimate priests [מצודת דוד, מצודת ציון, רס״ג, שטיינזלץ]. However, the search was unsuccessful. The primary approach among commentators is that the individuals themselves could not be found; their names were simply absent from the official books of lineage [מצודת דוד, אבן עזרא]. Another perspective suggests that the missing element was the physical document itself, meaning their specific family record could not be located [אבן עזרא].

Because they lacked proper proof, these individuals were treated as defiled and rejected from the priesthood, carrying a status of distance and unfitness for sacred work [רש״י, אבן עזרא, רס״ג, מצודת ציון]. Consequently, they were disqualified and barred from serving alongside the other priests in the Temple [רש״י, רס״ג, שטיינזלץ].

In practical terms, this suspension meant they were forbidden from approaching the altar and eating from the most holy offerings. This restriction was to remain in place until a priest could consult the Urim and Thummim to definitively determine their true status. Despite this severe limitation, they were not entirely banned from consuming all holy items. Because they had previously held a presumed priestly status and consumed lower-level holy offerings, they were permitted to continue doing so. The strict ban applied only to the highest levels of holiness, for which their lack of documented proof made them ineligible [רלב״ג].