ויקרא, פרק כ״א, פסוק ו׳

Those who serve God carry a heavy burden of responsibility, accompanied by strict spiritual and practical demands. A high status does not merely grant privileges; it requires these individuals to serve as living symbols of purity, life, and divine freedom. To maintain this standard, they must distance themselves from any association with death or pagan mourning customs. The primary requirement for this elevated state is a life of separation and self-restraint. Priests must avoid actions that are entirely permissible for ordinary Israelites, such as coming into contact with the dead or marrying certain women [רמב״ן, רבנו בחיי, ביאור שטיינזלץ]. This separation is not a form of social arrogance, but rather a strict demand for moral excellence and modesty [העמק דבר]. Furthermore, this standard applies not only within the walls of the sanctuary but also outside of it, ensuring that the Torah's ideal of life is constantly visible among the people [רש"ר הירש].

The mandate for priestly holiness is phrased indirectly, indicating that the instruction is not just a personal duty but a directive for the rabbinic court. The court is tasked with supervising the priests and, if necessary, compelling them to maintain their purity and avoid contamination against their will [רש"י, מזרחי, מלבי״ם, דברי דוד, גור אריה]. While the court enforces these standards, the priests face a severe personal warning against desecrating God's name [משכיל לדוד]. Because they are direct representatives of God, any moral failure or adoption of pagan practices [ביאור יש"ר, רד"צ הופמן], or even a simple lack of virtue [העמק דבר], humiliates the glory of the God they serve [רלב"ג]. In fact, a priest is not even allowed to waive his own personal honor, because his honor actually belongs to God; surrendering it is a desecration in itself [ספורנו, ברכת אשר]. The most severe violation is performing the sanctuary service in a state of impurity, an act that carries a heavenly death penalty [אדרת אליהו].

These uncompromising demands exist because the priests are the ones who offer sacrifices to God. They are compared to royal servants serving bread and wine at a king's table, a position that requires ultimate closeness and perfection [אלשיך]. The sacrifices they bring symbolize the spiritual connection between God and humanity, as well as the divine abundance that sustains the world [העמק דבר]. This sacred task is assigned exclusively to the priests, deliberately excluding the Levites, whose duties are limited to singing and guarding [מלבי״ם, אדרת אליהו]. On a deeper level, through their absolute devotion, the priests themselves become akin to the very sacrifices they offer to God [שפתי כהן].

Ultimately, those who offer the sacrifices absorb the sanctity of their work, becoming holy themselves [ביאור יש"ר]. This enduring state of holiness extends even to priests who have physical blemishes. Although a physical defect disqualifies a priest from actively serving at the altar, his fundamental spiritual holiness never expires [מלבי״ם, צפנת פענח, חזקוני, אדרת אליהו, רד"צ הופמן]. If they uphold the dignity of their calling, they earn the honor and reverence of the people in this world [העמק דבר], and their essential holiness ensures them eternal life in the world to come [מגלה עמוקות].