שמות, פרק כ״ח, פסוק כ״ט

When the High Priest steps into the holy sanctuary, he does not enter as a private individual, but rather as the official representative of the entire nation. Carrying the engraved names of the tribes upon his heart serves as a tangible symbol of this immense responsibility, effectively bringing the whole nation with him into the sacred space [קאסוטו]. These stones are far more than mere external decorations meant for beauty and splendor [ביאור שטיינזלץ]; they hold a fundamental role in representing the people, serving as the culmination of the prior instructions regarding the breastplate [ביאור יש״ר].

The garment holding these stones is known as the breastplate of judgment because it is the medium through which the judgments and needs of the Israelites are declared [חזקוני]. In this context, judgment also carries the meaning of actively pursuing justice for the Israelites. It represents a call to right their wrongs and vindicate them before the outside world [העמק דבר].

The purpose of carrying these names is to serve as a memorial before God. This act is meant to awaken the merit of the original tribal leaders, ensuring that God will look upon their descendants with peace because of the righteousness of their ancestors [ספורנו]. Furthermore, whenever the concept of a memorial is mentioned in relation to the Israelites, it is always directed toward salvation and rescue [העמק דבר].

A crucial distinction is made regarding the constant nature of this garment. While the stones on the shoulder-pieces of the ephod also serve as a memorial, the breastplate demands a continuous presence. The shoulder stones are meant to awaken a memory for blessings and livelihood, which are needs primarily emphasized during special times of the year, such as holidays. Conversely, the need to demand justice for the Israelites and seek their salvation through the breastplate is an existential necessity required at every single moment [העמק דבר]. The repeated emphasis on carrying this judgment upon the High Priest's heart is designed to amplify the mysterious, hidden power contained within the Urim and Thummim, whose true nature remains completely concealed from human understanding [ברכת אשר על התורה].