2 And these are the names of the sons of Aaron: his firstborn Nadab, then Abihu, and Eleazar, and Ithamar.
3 These the names of the sons of Aaron, the priests who were anointed and whose hands were filled and consecrated in order to exercise the priesthood.
4 For Nadab and Abihu died without children, when they offered, in the sight of the Lord, a strange fire, in the desert of Sinai. And so, Eleazar and Ithamar exercised the priesthood in the sight of Aaron, their father.
5 And the Lord spoke to Moses, saying:
6 "Bring forward the tribe of Levi, and cause them to stand in the sight of Aaron the priest, in order to minister to him. And let them keep watch outside,
7 and let them observe whatever pertains to the ritual for the multitude, in front of the tabernacle of the testimony,
8 and let them take care of the vessels of the tabernacle, serving in its ministry.