Numbers 18:3

3 They are to be at your disposal and perform all kinds of tasks related to the tent; only they are not to come near the holy furnishings or the altar, so that neither they nor 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 ADONAI said to Aharon, "You, your sons and your father's family line will be responsible for anything that goes wrong in the sanctuary. You and your sons with you will be responsible for anything wrong in your service as cohanim.

2 But you are to bring your kinsmen, the tribe of Levi, along with yourselves, to work together with you and help you - you and your sons with you - when you are there before the tent of meeting.

3 They are to be at your disposal and perform all kinds of tasks related to the tent; only they are not to come near the holy furnishings or the altar, so that neither they nor you will die.

4 They will work together with you in your duties related to the tent of meeting, whatever the service in the tent may be; but an unauthorized person is not to come near you.

5 You will take charge of all the holy things and the altar, so that there will no longer be anger against the people of Isra'el.