New Revised Standard Version
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. Eleazar and Ithamar served as priests in the lifetime of their father Aaron.

Contemporary English Version
But the LORD killed Nadab and Abihu in the Sinai Desert when they used fire that was unacceptable in their offering to the LORD. And because Nadab and Abihu had no sons, only Eleazar and Ithamar served as priests with their father Aaron.

New American Bible
But Nadab and Abihu died in the presence of the LORD when they offered unauthorized fire before the LORD in the wilderness of Sinai; and they left no sons. So only Eleazar and Ithamar served as priests during the lifetime of their father Aaron.

Douay-Rheims Bible
Now Nadab and Abiu died, without children, when they offered strange fire before the Lord, in the desert of Sinai: and Eleazar and Ithamar performed the priestly office in the presence of Aaron their father.

Now Nadab and Abiu died, without children, when they offered strange fire before the Lord, in the desert of Sinai: and Eleazar and Ithamar performed the priestly office in the presence of Aaron their father.

Nadab

Numbers 26:61 Of whom Nadab and Abiu died, when they had offered the strange fire before the Lord.

Leviticus 10:1,2 And Nadab and Abiu, the sons of Aaron, taking their censers, put fire therein, and incense on it, offering before the Lord strange fire: which was not commanded them. . . .