Numbers 18:5

“And ye shall keep the charge of the sanctuary, etc.] That is, the priests, Aaron and his sons; the high priest was to keep the charge of the most holy place particularly, and do what was to be done in that on the day of atonement; and the common priests to keep the charge of the holy place, and do everything relating to the altar of incense, the shewbread table, and candlestick: and the charge of the altar; of burnt offering, which stood in the court of the tabernacle: that there be no wrath any more upon the children of Israel: as had been upon Korah and his company, (<041632>Numbers 16:32,33), and as afterwards came on Uzziah, (<142619>2 Chronicles 26:19-21).”

“The sanctuary - Of the holy, and of the most holy place. Numbers 18:6”

“18:5-7 Only the priests (Aaron and his descendants) could perform sacred duties inside the sanctuary proper or approach the altar, a sacred space that deserved special reverence. Only the high priest could serve in the Most Holy Place. The Levites were to serve only in the courtyard, away from the altar, except when it was time to assemble or disassemble the Tabernacle (ch 4). 18:5 Aaron and the priests were the people’s representatives before the Lord, so their actions had consequences for all of Israel (cp. 16:18-21).”

“And ye: Num 8:2; Exo 27:21, Exo 30:7-10; Lev 24:3; Ch1 9:19, Ch1 9:23, Ch1 9:33, Ch1 24:5; Ti1 1:18; Ti1 3:15, Ti1 5:21, Ti1 6:20 no wrath: Num 8:19, Num 16:46; Jer 23:15; Zac 10:3 Numbers 18:6”