Moses, on the contrary, were classed among the rest of the Levitical families (cf. 1Ch 23:14).
verses 2-4
Names of the sons of Aaron, the “anointed priests (see Lev 8:12), whose hand they filled to be priests,” i.e., who were appointed to the priesthood (see at Lev 7:37). On Nadab and Abihu, see Lev 10:1-2. As they had neither of them any children when they were put to death, Eleazar and Ithamar were the only priests “in the sight of Aaron their father,” i.e., during his lifetime. “In the sight of:” as in Gen 11:28.
The Levites are placed before Aaron the priest, to be his servants.
Verse 6
“Bring near:” as in Exo 28:1. The expression לפני עמד is frequently met with in connection with the position of a servant, as standing before his master to receive his commands.
verses 7-8
They were to keep the charge of Aaron and the whole congregation before the tabernacle, to attend to the service of the dwelling, i.e., to observe what Aaron (the priest) and the whole congregation were bound to perform in relation to the service at the dwelling-place of Jehovah. “To keep the charge:” see Num 1:53 and Gen 26:5. In Num 3:8 this is more fully explained: they were to keep the vessels of the tabernacle, and to attend to all that was binding upon the children of Israel in relation to them, i.e., to take the oversight of the furniture, to keep it safe and clean.
Verse 9
Moses was also to give the Levites to Aaron and his sons. “They are wholly given to him out of the children of Israel:” the repetition of נתוּנם here and in Num 8:16 is emphatic, and expressive of complete surrender (Ewald, §313). The Levites, however, as nethunim, must be distinguished from the nethinim of non-Israelitish descent, who were given to the Levites at a later period as temple slaves, to perform the lowest duties connected with the sanctuary (see at Jos 9:27).
Verse 10
Aaron and his sons were to be appointed by Moses to take charge of the priesthood; as no stranger, no one who was not a son of Aaron, could approach the sanctuary without being put to death (cf. Num 1:53 and Lev 22:10).
verses 11-13
God appointed the Levites for this service, because He had decided to adopt them as His own in the place of all the first-born of Egypt. When He slew the first-born of Egypt, He sanctified to Himself all the first-born of Israel, of man and beast, for His own possession (see Exo 13:1-2). By virtue of this sanctification, which was founded upon the adoption of the whole nation as His first-born son, the nation was required to dedicate to Him its first-born sons for service at the sanctuary,
