ויקרא, פרק ט״ז, פסוק ד׳

On the holiest day of the year, as the High Priest prepares to enter the Holy of Holies, a striking transformation takes place. He strips away his magnificent, eight-piece golden uniform and dons four simple, white linen garments. The primary approach among commentators is that a material associated with prosecution cannot serve as an agent of defense. Gold inevitably recalls the sin of the Golden Calf, making it entirely inappropriate to seek atonement for the Israelites using the very substance of their historic failure. Furthermore, white represents purity, innocence, and forgiveness, standing in stark contrast to the redness associated with sin [בכור שור]. Wearing these unadorned clothes, which resemble the uniform of an ordinary priest, is meant to instill a deep sense of humility in the High Priest. Standing before God, he is reminded of his own physical nature and human imperfections [רלב״ג].

The repeated specification of linen serves to explicitly exclude the four golden garments—the breastplate, apron, robe, and headplate—emphasizing that they have no place in the inner sanctum [חזקוני, מלבי״ם]. The specific choice of linen over wool is highly intentional. Because linen grows directly from the earth rather than being sheared from an animal, it grounds the High Priest, reminding him of his earthly origins and encouraging a posture of submission. Additionally, a linen thread is singular and does not split, subtly reflecting the absolute unity of God [תולדות יצחק, רבנו בחיי].

Each of the four garments serves to atone for specific transgressions, mirroring the spiritual failures associated with Aaron's sons. The tunic atones for bloodshed, the trousers for forbidden sexual relations, the belt for sinful thoughts harboring in the heart, and the turban for arrogance [כלי יקר]. The very sequence of dressing—beginning with the trousers on the lower body and concluding with the turban on the head—illustrates a process of spiritual elevation. Through this upward progression, the priest sanctifies every part of his physical being [רבנו בחיי]. These garments must rest directly against his skin, without any intervening barrier of dirt or loose hair [שפתי כהן]. When it comes to the turban, it is not formed by winding a long cloth around the head in real-time; rather, it is a pre-folded hat, prepared in advance and simply placed upon his head [רש״י, רמב״ן].

The designation of this uniform as holy carries both practical and spiritual weight. Legally, the clothing must be purchased using communal public funds rather than the priest's personal wealth [רש״י]. Spiritually, these garments elevate the High Priest to the level of the ministering angels, who are prophetically described as being clothed in linen, thus mirroring the heavenly service [רמב״ן, ספורנו]. This elevated status also reassures the High Priest. Should he feel any loss of dignity by shedding his golden regalia, he is reminded that these simple linens are actually the most magnificent and appropriate attire for standing in the presence of God [אור החיים].

The process of changing clothes is accompanied by immersion in water. This washing is not a purification from ritual impurity, but rather a core element of the day's unique service. The High Priest immerses his entire body five times throughout Yom Kippur as he transitions between the golden garments used in the outer courtyard and the white garments worn in the inner sanctum, alongside washing his hands and feet ten times [רש״י, מזרחי]. This immersion represents a total detachment from the material world. It is a profound spiritual cleansing in preparation for encountering absolute holiness, rooted in an acknowledgment of human lowliness [רש״ר הירש, רלב״ג]. Following the conclusion of Yom Kippur, these specific linen garments are permanently stored away. This practice carries a hidden economic mercy; if the garments required for permanent storage each year were made of precious gold, replacing them annually would impose a crushing financial burden on the public [פרדס יוסף]. The final instruction to wear them carries an underlying linguistic hint that they are destined to simply wear out in their place of storage, never to be used for the service of the following year [תורה תמימה].