And the LORD spoke to Moses, saying,
And you shall appoint Aaron and his sons, and they shall guard their priesthood. But if any outsider comes near, he shall be put to death."
"Behold, I have taken the Levites from among the people of Israel instead of every firstborn who opens the womb among the people of Israel. The Levites shall be mine,
So shall you know that I have sent this command to you, that my covenant with Levi may stand, says the LORD of hosts.