דברי הימים ב, פרק כ״ט, פסוק כ״א

A widespread movement of national repentance requires an extraordinary level of atonement for the sins of the past. To achieve this, the leadership initiates a special series of sacrifices designed to purify the nation, the leaders, and the Temple itself, repairing the deep spiritual damage caused by the previous generation. The animals brought for this purpose are divided into two main categories. The first group consists of seven bulls, seven rams, and seven lambs. These function as burnt offerings, which are voluntary gifts completely consumed by fire on the altar [מלבי״ם, ביאור שטיינזלץ].

The second category consists of male goats [מצודת ציון, ביאור שטיינזלץ], which serve as sin offerings—a mandatory sacrifice meant to atone for the wrongdoing of the public. The specific use of seven male goats is highly unusual and does not follow the standard laws of sacrifices, indicating that this was a special, temporary instruction issued specifically for that moment in history [רש״י]. However, the specific combination of bulls for burnt offerings and goats for sin offerings mirrors the traditional sacrifice required when the entire community sins through idolatry. The number seven is deeply symbolic, representing the seven tribes that still remained in the Land of Israel after the others had been exiled. The guilt of these remaining tribes is treated as an unintentional sin committed by the national leadership, stemming from their failure to protest when the previous king, Ahaz, instituted widespread idol worship [מלבי״ם].

The ultimate goal of these sacrifices is to secure atonement for the kingdom, the Temple, and the tribe of Judah, all of which are in desperate need of spiritual repair [רד״ק]. The intention is to appease God so that the monarchy might endure and the Temple—which had been neglected and defiled during the reign of Ahaz—could be fully restored alongside the people of Judah [מצודת דוד, ביאור שטיינזלץ]. Finally, the priests are specifically instructed to offer these sacrifices upon God's altar. This careful instruction ensures that the offerings are made exclusively on His pure altar, firmly rejecting the foreign altars that Ahaz had previously scattered throughout the land [רש״י].