Lev 10.1 And Nadab and Abihu, the sons of Aaron, took either of them his censer, and put fire therein, and put incense thereon, and offered strange fire before the LORD, which he commanded them not.
Num 26.61 And Nadab and Abihu died, when they offered strange fire before the LORD.
1Cron 24.2 But Nadab and Abihu died before their father, and had no children: therefore Eleazar and Ithamar executed the priest's office.