Take Aaron along with his sons, the vestments, the anointing oil, the bull for a purification offering, the two rams, and the basket of unleavened bread,
Approach the altar,” Moses then told Aaron, “and make your purification offering and your burnt offering in atonement for yourself and for your household; then make the offering of the people in atonement for them, as the Lord has commanded.”
By faith Abel offered to God a sacrifice greater than Cain’s. Through this he was attested to be righteous, God bearing witness to his gifts, and through this, though dead, he still speaks.
therefore, he had to become like his brothers in every way, that he might be a merciful and faithful high priest before God to expiate the sins of the people.
He has no need, as did the high priests, to offer sacrifice day after day, first for his own sins and then for those of the people; he did that once for all when he offered himself.