Numbers 18:4
And they shall join themselves unto thee and keep the charge of the tabernacle of the testimony in all the service of the tabernacle; and no stranger shall come near unto you.
Numbers 1:51
And when the tabernacle departs, the Levites shall take it down; and when the tabernacle is to be pitched, the Levites shall set it up; and the stranger that comes near shall be put to death.
Numbers 3:10
And thou shalt appoint Aaron and his sons that they shall guard their priesthood; and the stranger that comes near shall be put to death.
1 Samuel 6:19
Then God smote those of Bethshemesh because they had looked at the ark of the LORD; he smote fifty thousand of the people and seventy principal men. And the people lamented because the LORD had smitten the people with such a great slaughter.
2 Samuel 6:6-7
And when they came to Nachon's threshingfloor, Uzzah put forth his hand to the ark of God and took hold of it, for the oxen shook it.