Leviticus 16:15 - Ellicott's Commentary On The Whole Bible

Then shall he kill the goat. — As the act of expiation for himself and for the priesthood was thus completed by the sprinkling of the blood, the high priest again left the Holy of Holies in the same manner as before, put the vessel on a golden stand in the Temple, expressly prepared for this purpose, and returned to the court, to the altar of burnt offering. On the north side of the altar he slew the goat which the lot had destined for God, and which was the sin offering for the people. As in the case of the bullock, which was his own sin offering, he caught the blood in the bowl, and went within the Holy of Holies a third time. He placed himself in the same position as before, sprinkled and counted the sprinklings in the same manner, and, on his returning to the Holy place, put the vessel on another stand.