Numbers 3:7-8

7They shall keep guard over him and over the whole congregation before the tent of meeting, aas they minister at the tabernacle. 8They shall guard all the furnishings of the tent of meeting, and keep guard over the people of Israel as they minister at the tabernacle.

Numbers 3:10

10And you shall appoint Aaron and his sons, and bthey shall guard their priesthood. But if cany outsider comes near, he shall be put to death.”

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