שמות, פרק כ״ח, פסוק ל״ה

The entry of the High Priest into the inner sanctuary is not merely a technical procedure but a profound spiritual encounter governed by strict ceremonial rules. The act of serving in the Tabernacle represents a direct and intimate connection with God. The High Priest's robe is designed to act upon his consciousness, helping to focus his thoughts exclusively on this holy work [רש"ר הירש, העמק דבר].

To reflect the gravity of this encounter, his movements must be accompanied by a constant sound. The primary approach among commentators is that the golden bells teach fundamental manners and royal etiquette. Just as it is improper to suddenly enter another person's home, and certainly a king's palace, the ringing acts as a respectful knock on the door. It serves as a request for permission before entering and a dignified farewell upon leaving [רמב"ן, רבנו בחיי, תולדות יצחק, מלבי"ם, קאסוטו, בכור שור, ביאור יש"ר]. Beyond etiquette, the sound functions as a practical and spiritual warning. Because no one else is permitted in the sanctuary during the atonement service, the bells alert others to keep their distance [רשב"ם, מלבי"ם]. On a more elevated level, the sound signals the ministering angels to clear the path, ensuring the High Priest is not harmed as he approaches to serve God in solitude [רמב"ן, רבנו בחיי, תולדות יצחק].

The sound is not only for the benefit of others but deeply impacts the High Priest himself. Much like other commandments that engage the sense of sight, the ringing engages his hearing. It serves as a constant reminder of his elevated status, holiness, and heavy responsibility, ensuring his mind never wanders from the sacred task [הכתב והקבלה]. Furthermore, the bells forge a vital link between the priest, the people, and prayer. The ringing embodies the High Priest's prayer being favorably received [אבן עזרא, רבנו בחיי]. It also signals to the Israelites standing outside that the service has begun, prompting them to direct their own hearts toward God [חזקוני]. Placed at the very bottom of the hem, the bells symbolize the simplest members of the nation, teaching that the High Priest must include absolutely everyone in his spiritual work [חומש קה"ת]. Additionally, the sound serves as an atonement for the cries of those who were accidentally killed [תורה תמימה].

There is a notable exception to this practice. On the Day of Atonement, the High Priest enters the Holy of Holies wearing only simple white linen garments, leaving the robe and its bells behind. On this unique day, the Israelites are likened to angels, and their collective merits support them. Therefore, the usual requirements for a sounding bell, a warning, or a formal request for permission are no longer necessary [רבנו בחיי, תולדות יצחק, חומש קה"ת].

The severe warning that the High Priest will die if he fails to follow these instructions leads to different understandings of the penalty. One perspective views this as a broad rule establishing the necessity of all the priestly garments. If the High Priest officiates while missing even a single required piece of clothing, he is liable to death by heavenly hands [רש"י, מזרחי, שפתי חכמים, גור אריה, לבוש האורה]. A contrasting view argues that the penalty applies specifically to the robe and its bells. In this view, entering without the bells is a fatal breach of royal protocol, akin to bursting into a king's presence uninvited. Alternatively, it leaves the priest vulnerable because he lacks the protective merit that the garment provides [רמב"ן, אור החיים].