Numbers 3:4

But 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. So Eleazar and Ithamar served as priests in the lifetime of their father Aaron.

Leviticus 10:1-2

Now Nadab and Abihu, the sons of Aaron, took their respective firepans, and after putting fire in them, placed incense on it and offered strange fire before the Lord, which He had not commanded them.

Numbers 26:61

But Nadab and Abihu died when they offered strange fire before the Lord.

Treasury of Scripture Knowledge

Summary

Numbers 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.

General references

Numbers 26:61

Joshua 21:10

Bible References

General references

But Nadab and Abihu died when they offered strange fire before the Lord.

and they were for the sons of Aaron, one of the families of the Kohathites, of the sons of Levi, for the lot was theirs first.