Numbers 1:51; Numbers 3:10; Numbers 3:38; Numbers 17:13; Numbers 18:7

51 "So when the tabernacle is to set out, the Levites shall take it down; and when the tabernacle encamps, the Levites shall set it up. But the layman who comes near shall be put to death.

10 "So you shall appoint Aaron and his sons that they may keep their priesthood, but the layman who comes near shall be put to death."

38 Now those who were to camp before the tabernacle eastward, before the tent of meeting toward the sunrise, are Moses and Aaron and his sons, performing the duties of the sanctuary for the obligation of the sons of Israel; but the layman coming near was to be put to death.

13 "Everyone who comes near, who comes near to the tabernacle of the LORD , must die. Are we to perish completely?"

7 "But you and your sons with you shall attend to your priesthood for everything concerning the altar and inside the veil, and you are to perform service. I am giving you the priesthood as a bestowed service, but the outsider who comes near shall be put to death."