Leviticus 10:2

10:2 And there went out fire from the LORD, and devoured them, and they died before the LORD.

Numbers 3:4

3:4 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 sight of Aaron their father.

Numbers 26:61

26:61 And Nadab and Abihu died, when they offered strange fire before the LORD.