במדבר, פרק י״ט, פסוק ז׳

The ritual of the red heifer contains a profound and mysterious paradox: the very ashes that purify the impure simultaneously defile the pure individuals who prepare them. The pure priest must step outside the camp and sacrifice his own personal purity in order to purify his brother. This altruistic devotion, where the priest sets aside his own spiritual standing for the sake of another, is precisely what awakens the holiness of God and enables the purification process to work [חומש קה״ת].

Furthermore, a person who has contracted impurity from a corpse often experiences anxiety and profound isolation in the face of death. When those working to purify him become impure themselves, they demonstrate a deep sense of brotherhood and companionship, effectively dispelling his loneliness [קונטרס חיבה יתירה]. Others suggest that this resulting impurity serves a practical purpose, preventing people from unnecessarily sprinkling the ashes upon themselves merely to boast of their extreme piety and purity [בכור שור]. Additionally, because the heifer absorbs the forces of impurity in order to nullify them, anyone handling it naturally catches that same impurity [רקנאטי].

The requirement for purification falls specifically upon the priest who throws the cedar wood, hyssop, and crimson thread into the fire [רש ר הירש, ביאור יש״ר, חזקוני, מלבי״ם], an act he performs while wearing his official priestly garments [תורה תמימה]. However, the primary approach among commentators is that this rule extends to anyone engaged in the red heifer process from beginning to end, such as the one who slaughters it, burns it, or gathers its ashes. As long as they are properly occupied with the ritual, they contract impurity [רלב״ג, רש ר הירש, בכור שור, אדרת אליהו, מלבי״ם].

The purification process for these individuals requires two distinct stages. The first involves washing garments, which does not refer to ordinary laundering, but rather to immersing the clothing and any vessels the person touched into a ritual bath [רש ר הירש, אדרת אליהו]. The second stage is bathing the flesh, meaning the total immersion of the entire body at once in a valid ritual bath [ביאור שטיינזלץ, אדרת אליהו]. Once these steps are completed, the individual may return to the camp.

This return specifically refers to entering the camp of the Divine Presence, or the area of the Tabernacle. According to Jewish law, a person impure from a corpse is not banished from the general Israelite camp or the Levite camp, but only from the Tabernacle. Only individuals whose impurity stems from bodily emissions are banished from all three camps [רש״י, ריב״א, שפתי חכמים, מזרחי, גור אריה, משכיל לדוד]. The priest fundamentally requires this purification to fulfill his duties, allowing him to enter the Tabernacle and partake of sacred offerings [רש ר הירש]. On a symbolic level, this return to the camp represents a person rejoining the community of the righteous after completing a process of repentance [שפתי כהן].

The conclusion of the purification timeline presents a logical difficulty. If the priest has already immersed and is permitted to enter the camp, it seems contradictory that he remains impure until evening and cannot yet eat sacred foods. To resolve this, most commentators explain that the sequence of events must be understood in reverse. The priest remains impure until evening, and only after the sun sets is he permitted to enter the camp [רש״י, שפתי חכמים, מזרחי, הכתב והקבלה, אדרת אליהו, מלבי״ם, גור אריה, ברכת אשר]. Both the physical immersion and the wait for nightfall are absolute prerequisites that delay his entry [הכתב והקבלה, אדרת אליהו]. Alternatively, others read the sequence exactly as it occurs. Immediately after the heifer is burned and the priest has immersed, he may return to the general Israelite camp, from which corpse impurity does not exclude him. However, he remains impure specifically regarding the consumption of sacred offerings and entry into the Tabernacle until the sun finally sets [ביאור יש״ר, העמק דבר, אבן עזרא].