1. This is the family of Aaron and Moses at the time the Lord spoke to Moses on Mount Sinai.
2. Aaron had four sons: Nadab, the eldest, Abihu, Eleazar, and Ithamar.
3. They were anointed and ordained as priests,
4. but Nadab and Abihu were killed when they offered unholy fire to the Lord in the Sinai Desert. They had no children, so Eleazar and Ithamar served as priests during Aaron's lifetime.
5. The Lord said to Moses,
12-13. “The Levites are now to be mine. When I killed all the firstborn of the Egyptians, I consecrated as my own the eldest son of each Israelite family and the firstborn of every animal. Now, instead of having the firstborn sons of Israel as my own, I have the Levites; they will belong to me. I am the Lord.”
17-20. Levi had three sons: Gershon, Kohath, and Merari, who were the ancestors of the clans that bear their names. Gershon had two sons: Libni and Shimei; Kohath had four sons: Amram, Izhar, Hebron, and Uzziel; and Merari had two sons: Mahli and Mushi. They were the ancestors of the families that bear their names.
40-41. The Lord said to Moses, “All of Israel's firstborn sons belong to me. So register by name every firstborn male Israelite, one month old or older. But in place of them I claim all the Levites as mine! I am the Lord! I also claim the livestock of the Levites in place of all the firstborn of the livestock.”