Numbers 1:51
When the tabernacle is to go forward, the Levites shall take it down; and when the tabernacle is to [be set up for] camp, the Levites shall set it up. But the layman (non-Levite) who approaches the tabernacle shall be put to death.
Numbers 3:38
Now those to camp before the tabernacle toward the east, before the Tent of Meeting, toward the sunrise, were to be Moses, and Aaron and his sons, performing the duties of the sanctuary for whatever was required of the Israelites; and the
Numbers 3:10
So you shall appoint Aaron and his sons, and they shall observe and attend to their priesthood; but the layman (non-Levite) who approaches [the holy things] shall be put to death.”
Numbers 18:22
The Israelites shall never again approach the Tent of Meeting [the covered sanctuary, the Holy Place, and the Holy of Holies], or they [who do] will incur sin and die.
1 Samuel 6:19
The Lord struck down some of the men of Beth-shemesh because they had looked into the ark of the Lord. He struck down 50,070 men among the people, and the people mourned because the Lord had struck the people with a great slaughter.
2 Samuel 6:7
And
Leviticus 22:10-13
‘No layman [that is, someone outside of Aaron’s family] is to eat the holy gift [which has been offered to God]; a foreigner residing with the priest or a hired man shall not eat the holy thing.
Numbers 4:1-33
Then the Lord spoke to Moses and Aaron, saying,
Numbers 10:11
On the twentieth day of the second month in the second year [since leaving Egypt], the cloud [of the Lord’s presence] was lifted from over the tabernacle of the Testimony,
Numbers 10:17-21
Then the tabernacle was taken down; and the sons of Gershon and the sons of Merari, who were carrying the tabernacle, moved out.
Numbers 16:40
as a reminder to the sons of Israel so that no layman—that is, one who is not of the descendants of Aaron should approach to offer incense before the Lord; so that he will not become like Korah and as his company—just as the Lord had said to him through Moses.