61 And Nadab and Abihu died, when they offered strange fire before the LORD.
Numbers 26:61 Cross References - JPS_ASV_Byz
Leviticus 10:1-2
Numbers 3:4
4 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 presence of Aaron their father.