The dedication of the Tabernacle demands the active participation and spiritual purity of the entire nation, weaving the repair of past failures into the present moment of elevation. As the instructions are delivered to the Israelites, a question arises regarding who actually addresses the nation. One perspective suggests that Moses speaks to the elders, tasking them with relaying the message to the broader public [רמב״ן, הטור הארוך, ביאור יש״ר]. However, the primary approach among commentators is that Moses commands Aaron the High Priest to speak directly to the Israelites. This direct address serves to elevate Aaron in the eyes of the people, validating his worthiness for the High Priesthood and preventing any future disputes over his leadership [רמב״ן, הטור הארוך, שפתי כהן]. Furthermore, having Aaron deliver these instructions demonstrates that he has been entirely cleansed of his involvement in the sin of the Golden Calf, granting him the moral authority to guide others toward atonement [כלי יקר]. This dynamic operates measure for measure: since Aaron originally instructed the people to bring their gold to fashion the calf, he is now tasked with instructing them to bring an offering of atonement [אור החיים]. His message is delivered with a tone of softness and appeasement, reassuring the nation that the Divine Presence rests upon them because of their virtues [אור החיים], and highlighting Aaron's practical role in drawing the people closer to God [העמק דבר].
At the center of these instructions is the command to bring a goat and a calf. The requirement to bring a calf specifically serves as a profound reassurance to the nation that the sin of the Golden Calf has been completely forgiven [רא״ש, דעת זקנים]. It acts as a spiritual tribute, designed to silence any heavenly accusation as they enter the sanctuary [רקנאטי]. Beyond this immediate context, most commentators connect these two specific animals to two monumental historical failures: the goat atones for the selling of Joseph, mirroring the goat the brothers slaughtered to dip his coat in blood, while the calf atones for the Golden Calf [רמב״ן, רבנו בחיי, רקנאטי, פרדס יוסף, שפתי כהן, כלי יקר, חזקוני]. These two events are bound together because they share a common root of jealousy and baseless hatred. The fracture between brothers during the time of Joseph paved the way for the spiritual fracture that eventually led to idolatry. Therefore, achieving true purity requires a dual repair, mending the relationship between individuals alongside the relationship between the people and God [כלי יקר]. The goat is mentioned first simply because the selling of Joseph preceded the Golden Calf in history [שפתי כהן]. Additionally, the goat serves to atone for historical ties to idolatry and the worship of demons [כלי יקר, חזקוני], while also representing the nation's steadfast resistance against foreign influences [רש״ר הירש].
A subtle but crucial distinction is made between the calf brought by Aaron and the calf brought by the people. While Aaron was instructed to bring a calf for a sin offering, the nation is told to bring theirs as a burnt offering. This difference highlights the stark contrast in their intentions during the creation of the Golden Calf. Aaron sinned only in his actions, while his internal intentions remained directed toward heaven; thus, he brings a sin offering, which atones for physical actions. The people, however, sinned in their thoughts and the desires of their hearts, which requires a burnt offering, a sacrifice specifically designated to atone for improper thoughts [רבנו בחיי, פענח רזא]. The sin offering also functions to cleanse the specific sin of their speech, recalling the moment they declared the calf to be their god [פענח רזא].
The atonement process is completed with the addition of a lamb. This animal symbolizes the conquering of sin [קיצור בעל הטורים] and reflects the nation's youthful, absolute devotion to following God as their shepherd [רש״ר הירש]. Finally, the animals chosen for these offerings must meet specific criteria. They must be in their first year of life [אבן עזרא, פענח רזא]. The requirement for them to be unblemished goes beyond mere physical perfection; it dictates that their first year of life must be entirely full and complete [העמק דבר].