It had taken two chapters to establish the superiority of the Lord Jesus Christ, as fully God the Son, above every earthly and heavenly principality. Now, the writer was establishing Jesus’ work as also superior, pre-eminent, far above any human priest’s work, even of Aaron himself.
Hebrews: Korah’s Revolt
How could there be a priesthood more perfect than that of Aaron, particularly when God had so protected the sanctity and exclusivity of the Aaronic priesthood for thousands of years?
Yom Kippur
Ten days after the Feast of Trumpets came Yom Kippur, which was a time of self-examination and repentance and forgiveness. centuries later, Christians would see Jesus as both sacrifice and high priest