ויקרא, פרק ט״ז, פסוק כ״ו

The climax of the Yom Kippur service centers on sending a sin-bearing goat into the barren desert. This profound act of purifying the entire Israelite nation creates a striking paradox. The very individual tasked with carrying away the sins of the people becomes spiritually impure through his mission, requiring his own process of purification before he can rejoin society.

This crucial task is assigned to a designated messenger rather than the High Priest. The nature of his mission is one of absolute finality, a permanent parting from which the goat will never return [מלבי״ם, אילת השחר]. While the primary approach among commentators understands his role as simply leading the animal away, a unique perspective suggests a more forceful end. In this view, the language hints at a weapon or blade, implying that the goat is not merely sent off to roam, but is actively cut down and killed in the wilderness [בכור שור].

The destination of this journey is Azazel, a concept understood in both physical and spiritual terms. Physically, it is identified as a steep, jagged, and unforgiving rocky cliff [מלבי״ם]. Yet, many view it as a symbol of dark spiritual forces. The desolate desert represents the domain of negative spiritual entities and the "Other Side." In this light, the name itself suggests a place where power is gathered and ultimately lost, or a realm of degradation and contempt [אור החיים, מלבי״ם].

By venturing into this wasteland, the messenger comes face to face with these dark forces [ביאור שטיינזלץ]. This encounter represents a surrender to base urges and the loss of moral freedom, which is the very root of spiritual impurity [רש״ר הירש]. It is this direct contact with both the sin-laden goat and the forces of darkness that renders the messenger impure [ביאור יש״ר, רש״ר הירש, רד״צ הופמן]. Interestingly, this impurity does not affect those who escort him, and it does not take hold immediately. The messenger only becomes impure the moment he steps outside the walls of Jerusalem, marking the true beginning of his active mission toward the cliff [תורה תמימה, אדרת אליהו, מלבי״ם, רד״צ הופמן].

To cleanse himself, the messenger must wash his clothes and bathe in water. On an allegorical level, this washing suggests that he must first cleanse his own personal sins in the waters of repentance. Doing so prevents any accusing spiritual forces from finding fault with the Israelites while the goat is being sent away [שפתי כהן]. On a literal level, the strict requirement to undergo this cleansing before returning to the camp proves that his state is not merely an arbitrary decree or a technical restriction from entering the sanctuary, but a genuine spiritual impurity requiring a real process of purification [מלבי״ם, אילת השחר, צפנת פענח, אדרת אליהו].

The exact requirements for his return are a matter of discussion. Some maintain that simply washing his body in water is sufficient to restore his purity, allowing him to re-enter the camp immediately without waiting for nightfall [חזקוני, אבן עזרא]. Conversely, other commentators argue that he must both immerse himself and wait for the sun to set before he is permitted back into the camp and the sanctuary. Once the sun has set and his purification is complete, however, he is expected to return to the camp right away, without letting the strict work prohibitions of Yom Kippur delay his journey home [רלב״ג, רש״ר הירש, רד״צ הופמן].