Numbers 3:38
King James Version
“But those that encamp before the tabernacle toward the east, before the tabernacle of the congregation eastward, Moses, and Aaron and his sons, keeping the charge of the sanctuary for the charge of the children of Israel; and the stranger that cometh nigh shall be put to death.”
Context
35And the chief of the house of the father of the families of Merari Zuriel the son of Abihail: shall pitch on the side of the tabernacle northward.
36And the custody and charge of the sons of Merari the boards of the tabernacle, and the bars thereof, and the pillars thereof, and the sockets thereof, and all the vessels thereof, and all that serveth thereto,
37And the pillars of the court round about, and their sockets, and their pins, and their cords.
38But those that encamp before the tabernacle toward the east, before the tabernacle of the congregation eastward, Moses, and Aaron and his sons, keeping the charge of the sanctuary for the charge of the children of Israel; and the stranger that cometh nigh shall be put to death.
39All that were numbered of the Levites, which Moses and Aaron numbered at the commandment of the LORD, throughout their families, all the males from a month old and upward, twenty and two thousand.
40And the LORD said unto Moses, Number all the firstborn of the males of the children of Israel from a month old and upward, and take the number of their names.
41And thou shalt take the Levites for me (I the LORD) instead of all the firstborn among the children of Israel; and the cattle of the Levites instead of all the firstlings among the cattle of the children of Israel.