he should
Hebrews 7:11-15
11
If therefore perfection were by the Levitical priesthood, (for under it the people received the law,) what further need was there that another priest should rise after the order of Melchisedec, and not be called after the order of Aaron?
12
For the priesthood being changed, there is made of necessity a change also of the law.
13
For he of whom these things are spoken pertaineth to another tribe, of which no man gave attendance at the altar.
14
For it is evident that our Lord sprang out of Juda; of which tribe Moses spake nothing concerning priesthood.
15
And it is yet far more evident: for that after the similitude of Melchisedec there ariseth another priest,
Numbers 16:40
To be a memorial unto the children of Israel, that no stranger, which is not of the seed of Aaron, come near to offer incense before the LORD; that he be not as Korah, and as his company: as the LORD said to him by the hand of Moses.
Numbers 17:12
And the children of Israel spake unto Moses, saying, Behold, we die, we perish, we all perish.
Numbers 17:13
Whosoever cometh any thing near unto the tabernacle of the LORD shall die: shall we be consumed with dying?
Numbers 18:5
And ye shall keep the charge of the sanctuary, and the charge of the altar: that there be no wrath any more upon the children of Israel.
2 Chronicles 26:18
And they withstood Uzziah the king, and said unto him, It appertaineth not unto thee, Uzziah, to burn incense unto the LORD, but to the priests the sons of Aaron, that are consecrated to burn incense: go out of the sanctuary; for thou hast trespassed; neither shall it be for thine honour from the LORD God.
2 Chronicles 26:19
Then Uzziah was wroth, and had a censer in his hand to burn incense: and while he was wroth with the priests, the leprosy even rose up in his forehead before the priests in the house of the LORD, from beside the incense altar.
See
Hebrews 11:4
By faith Abel offered unto God a more excellent sacrifice than Cain, by which he obtained witness that he was righteous, God testifying of his gifts: and by it he being dead yet speaketh.