The Lord spoke to Moses:
You are to appoint Aaron and his sons to carry out their priestly responsibilities, but any unauthorized person who comes near the sanctuary is to be put to death.”
“See, I have taken the Levites from the Israelites in place of every firstborn Israelite from the womb. The Levites belong to me,
Then you will know that I sent you this decree, so that my covenant with Levi may continue,” says the Lord of Armies.