1. This is the family tree of Aaron and Moses at the time God spoke with Moses on Mount Sinai.
2-4. The names of the sons of Aaron: Nadab the firstborn, Abihu, Eleazar, and Ithamar—anointed priests ordained to serve as priests. But Nadab and Abihu fell dead in the presence of God when they offered unauthorized sacrifice to him in the Wilderness of Sinai. They left no sons, and so only Eleazar and Ithamar served as priests during the lifetime of their father, Aaron.
5-10. God spoke to Moses. He said, “Bring forward the tribe of Levi and present them to Aaron so they can help him. They shall work for him and the whole congregation at the Tent of Meeting by doing the work of The Dwelling. Their job is to be responsible for all the furnishings of The Dwelling, ministering to the affairs of The Dwelling as the People of Israel come to perform their duties. Turn the Levites over to Aaron and his sons; they are the ones assigned to work full time for him. Appoint Aaron and his sons to minister as priests; anyone else who tries to elbow his way in will be put to death.”
11-13. God spoke to Moses: “I have taken the Levites from among the People of Israel as a stand-in for every Israelite mother’s firstborn son. The Levites belong to me. All the firstborn are mine—when I killed all the firstborn in Egypt, I consecrated for my own use every firstborn in Israel, whether human or animal. They belong to me. I am God.”
14-16. God spoke to Moses in the Wilderness of Sinai: “Count the Levites by their ancestral families and clans. Count every male a month old and older.” Moses counted them just as he was instructed by the mouth of God.
17. These are the names of the sons of Levi: Gershon, Kohath, and Merari.
18. These are the names of the Gershonite clans: Libni and Shimei.
19. The sons of Kohath by clan: Amram, Izhar, Hebron, and Uzziel.
20. The sons of Merari by clan: Mahli and Mushi.These are the clans of Levi, family by family.
21-26. Gershon was ancestor to the clans of the Libnites and Shimeites, known as the Gershonite clans. All the males who were one month and older numbered 7,500. The Gershonite clans camped on the west, behind The Dwelling, led by Eliasaph son of Lael. At the Tent of Meeting the Gershonites were in charge of maintaining The Dwelling and its tent, its coverings, the screen at the entrance to the Tent of Meeting, the hangings of the Courtyard, the screen at the entrance to the Courtyard that surrounded The Dwelling and Altar, and the cords—in short, everything having to do with these things.