Moses
Numbers 18:3BSB·traditional attribution

And they shall attend to your duties and to all the duties of the Tent; but they must not come near to the furnishings of the sanctuary or the altar, or both they and you will die.

Matthew Henry Presbyterian @wholebiblehenry

The coherence of this chapter with that foregoing is very observable. I. The people, in the close of that chapter, had complained of the difficulty and peril that there were in drawing near to God, which put them under some dreadful apprehensions that the tabernacle in the midst of them, which they hoped would have been their joy and glory, would rather be their terror and ruin.

Commenting on Numbers 18:1-7

John Gill Reformed Baptist @doctorgill

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, &c.

Geneva Bible Notes Reformed @genevanotes

And they shall keep thy charge, and the charge of all the tabernacle: only they shall not come nigh the vessels of the sanctuary and the altar, that neither they, nor ye also, die. (b) That is, the things which are committed to you, or, which you command them.