Numbers 18:3

3 They will work for you. They must do everything that needs to be done at the tent. But they must not go near anything that belongs to the sacred tent. And they must not go near the altar. If they do, they and you will die.

Numbers 18:3 Meaning and Commentary

Numbers 18:3

And they shall keep thy charge, and the charge of all the
tabernacle
That is, the Levites, whatever Aaron and his sons, the priests, should charge them to do, or commit to their care and charge, that they should observe; as to watch and keep out all unfit persons, to take down and set up the tabernacle when needful only they shall not come nigh the vessels of the sanctuary;
as the ark and mercy seat in the holy of holies, the shewbread table, and candlestick in the holy place; wherefore when these were removed from place to place in journeying, they were covered, that they might not touch them as they carried them: and the altar;
both of incense and burnt offering, on neither of which might they offer: that neither they nor you also die:
the priests for suffering them to meddle with things that did not belong to them, and the Levites for intruding themselves.

Numbers 18:3 In-Context

1 The LORD spoke to Aaron. He said, "You, your sons and your father's family are in charge of the sacred tent. You will be held accountable for sins that are committed against it. And you and your sons will be held accountable for sins that are committed against the office of priest.

2 "Bring the Levites from your tribe to join you. They will help you when you and your sons serve at the tent where the tablets of the covenant are kept.

3 They will work for you. They must do everything that needs to be done at the tent. But they must not go near anything that belongs to the sacred tent. And they must not go near the altar. If they do, they and you will die.

4 They will help you take care of the Tent of Meeting. They will join you in all of the work at the tent. No one else can come near you there.

5 "You will be held accountable for taking care of the sacred tent and the altar. Then my anger will not fall on the people of Israel again.