3 And you shall write Aaron's name upon the rod of Levi: for one rod shall be for the head of the house of their fathers.
Numbers 17:3 Cross References - UKJV
Exodus 6:16
16 And these are the names of the sons of Levi according to their generations; Gershon, and Kohath, and Merari: and the years of the life of Levi were an hundred thirty and seven years.
Exodus 6:20
20 And Amram took him Jochebed his father's sister to wife; and she bare him Aaron and Moses: and the years of the life of Amram were an hundred and thirty and seven years.
Numbers 3:2-3
Numbers 18:1
1 And the LORD said unto Aaron, You and your sons and your father's house with you shall bear the iniquity of the sanctuary: and you and your sons with you shall bear the iniquity of your priesthood.
Numbers 18:7
7 Therefore you and your sons with you shall keep your priest's office for everything of the altar, and within the vail; and all of you shall serve: I have given your priest's office unto you as a service of gift: and the stranger that comes nigh shall be put to death.