שמות, פרק כ״ט, פסוק י״ט

The process of sanctifying the priests reaches a powerful peak with the bringing of a special sacrifice. This moment marks their formal entry into their new role and establishes their respected status [רש ר הירש]. The ceremony involves taking a second ram, known as the ram of ordination, which is offered immediately following the sin and burnt offerings [אבן עזרא, רקנאטי]. Unlike those prior sacrifices, this ram serves as a peace offering. Its core purpose is to bring peace and harmony into the world. Instead of being completely consumed by fire, it creates a shared experience where the altar, the priests, and the owners all partake and eat together in partnership [רקנאטי].

The ritual continues with Aaron and his sons pressing their hands onto the head of the ram. This action requires the use of both hands. Conceptually, when a physical act demands both hands, the distinction between right and left disappears, merging them into a single, complete unit. Adding to this profound sense of unity, Aaron and his sons did not perform this action one after the other. Instead, they placed their hands on the animal simultaneously, acting together as one unified body [צפנת פענח].

Beyond serving as an initiation into the priesthood, this specific ritual holds a deep layer of personal atonement for Aaron regarding his involvement in the sin of the Golden Calf [צפנת פענח]. The subsequent step of placing the ram's blood on Aaron's body is meant to cleanse the very senses and limbs that participated in that past failure. Blood is placed on his ear, which heard the people's demand for an idol but failed to shut it out. It is placed on his right thumb, which took the donated gold and helped shape it. Finally, it is placed on his big toe, representing how he stood up from his place to carry out the will of the people [שפתי כהן].