Numbers 3:4

Overview - Numbers 3
The sons of Aaron.
The Levites are given to the priests instead of the first-born;
14 are numbered by their families.
21 The families, number, and charge of the Gershonites;
27 of the Kohathites;
33 of the Merarites.
38 The place and charge of Moses and Aaron.
40 The first-born are freed by the Levites.
44 The overplus are redeemed.
Treasury of Scripture Knowledge

Numbers 3:4  (King James Version)
And Nadab and Abihu died before the LORD, when they offered strange fire before the LORD, in the wilderness of Sinai, and they had no children: and Eleazar and Ithamar ministered in the priest's office in the sight of Aaron their father.

26:61 Leviticus 10:1 Leviticus 10:2