61 And Nadab and Abihu died, when they offered unholy fire before the LORD.
Numbers 26:61 Cross References - KJ2000
Leviticus 10:1-2
Numbers 3:4
4 And Nadab and Abihu died before the LORD, when they offered unholy 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.