Cross reference
Numbers 17:3
3 And let Aaron's name be placed on the rod of Levi: for there is to be one rod for the head of every family.
Exodus 6:16
16 And these are the names of the sons of Levi in the order of their generations: Gershon and Kohath and Merari: and the years of Levi's life were a hundred and thirty-seven.
Exodus 6:20
20 And Amram took Jochebed, his father's sister, as wife; and she gave birth to Aaron and Moses: and the years of Amram's life were a hundred and thirty-seven.
Numbers 3:2-3
2 These are the names of the sons of Aaron: Nadab the oldest, and Abihu, Eleazar, and Ithamar.
3 These are the names of the sons of Aaron, the priests, on whom the holy oil was put, who were marked out as priests.
Numbers 18:1
1 And the Lord said to Aaron, You and your sons and your father's family are to be responsible for all wrongdoing in relation to the holy place: and you and your sons are to be responsible for the errors which come about in your work as priests.
Numbers 18:7
7 And you and your sons with you are to be responsible as priests for the altar and everything on it, and everything inside the veil; you are to do the work of priests; I have given you your position as priests; and any other man who comes near will be put to death.