Numbers 3:4

Amplified Bible

But Nadab and Abihu died in the presence of the Lord when they offered strange (unholy, unacceptable, inappropriate) fire before the Lord in the Wilderness of Sinai; and they had no sons. So Eleazar and Ithamar served as priests in the presence and under the supervision of Aaron their father. [Lev 10:1-4]

Cross References

1 Chronicles 24:1

The divisions of the descendants of Aaron were these: the sons of Aaron were Nadab, Abihu, Eleazar, and Ithamar.

Numbers 16:35

Fire also came forth from the Lord and consumed the two hundred and fifty men who were offering the incense.

Numbers 19:3

You shall give it to Eleazar the priest, and it shall be brought outside the camp and be slaughtered in his presence.

Numbers 20:25

Take Aaron and Eleazar his son and bring them up to Mount Hor;

Numbers 26:61

But Nadab and Abihu died [in the presence of God] when they offered [in their ceremonial censers] strange [unholy, unacceptable, unauthorized] fire before the Lord. [Lev 10:1-3]

Numbers 3:5

Then the Lord spoke to Moses, saying,