Numbers 26:61 in the World English Bible
Nadab and Abihu died when they offered strange fire before the LORD.
Context
60 And unto Aaron was born Nadab, and Abihu, Eleazar, and Ithamar.
61 And Nadab and Abihu died, when they offered strange fire before the LORD.
62 And those that were numbered of them were twenty and three thousand, all males from a month old and upward: for they were not numbered among the children of Israel, because there was no inheritance given them among the children of Israel.