“Aaron is not going to enter the land which I promised to give to Israel; he is going to die, because the two of you rebelled against my command at Meribah.
It was on the basis of the levitical priesthood that the Law was given to the people of Israel. Now, if the work of the levitical priests had been perfect, there would have been no need for a different kind of priest to appear, one who is in the priestly order of Melchizedek, not of Aaron.