Numbers 1:51

1:51 Whenever the tabernacle is to move, the Levites must take it down, and whenever the tabernacle is to be reassembled, the Levites must set it up. Any unauthorized person who approaches it must be killed.

Numbers 3:10

3:10 So you are to appoint Aaron and his sons, and they will be responsible for their priesthood; but the unauthorized person who comes near must be put to death.”

Numbers 3:1

The Sons of Aaron

3:1 Now these are the records of Aaron and Moses when the Lord spoke with Moses on Mount Sinai.

Numbers 6:19

6:19 And the priest must take the boiled shoulder of the ram, one cake made without yeast from the basket, and one wafer made without yeast, and put them on the hands of the Nazirite after he has shaved his consecrated head;

Numbers 6:2

6:2 “Speak to the Israelites, and tell them, ‘When either a man or a woman takes a special vow, to take a vow as a Nazirite, to separate himself to the Lord,

Numbers 6:6-7

6:6 “‘All the days that he separates himself to the Lord he must not contact a dead body. 6:7 He must not defile himself even for his father or his mother or his brother or his sister if they die, because the separation for his God is on his head.