Numbers 18:6 (BSB)

Behold, I Myself have selected your fellow Levites from the Israelites as a gift to you, dedicated to the LORD to perform the service for the Tent of Meeting.

From Numbers 18. Also in the ESV.

Commentary on Numbers 18:6

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Numbers 18:1-7: 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.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Numbers 18:6: And I, behold, I have taken your brethren the Levites, from among the children of Israel,.... See Gill on Num 3:12; where the same is said, only they, are here called the brethren of the priests for the reason given, Num 18:2, to you they are given as a gift for the Lord, to do the service of the tabernacle of the congregation; See Gill...
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Numbers 18:5-7: Num 18:5-7 The charge of the sanctuary (i.e., the dwelling) and the altar (of burnt-offering) devolved upon Aaron and his sons, that the wrath of God might not come again upon the children of Israel (see Num 8:19), - namely, through such illegal acts as Nadab and Abihu (Lev 10:2), and the company of Korah (Num 16:35), had committed.