1 Chronicles 24:2

But Nadab and Abihu came to their end before their father, and had no children; so Eleazar and Ithamar did the work of priests.

Leviticus 10:2

And fire came out from before the Lord, burning them up and causing their destruction before the Lord.

Numbers 3:4

And Nadab and Abihu were put to death before the Lord when they made an offering of strange fire before the Lord, in the waste land of Sinai, and they had no children: and Eleazar and Ithamar did the work of priests before Aaron their father.

Numbers 26:61

Death overtook Nadab and Abihu when they made an offering of strange fire before the Lord.

Exodus 24:1

And he said to Moses, Come up to the Lord, you and Aaron, and Nadab and Abihu and seventy of the chiefs of Israel; and give me worship from a distance.

Exodus 24:9

Then Moses and Aaron, Nadab, and Abihu, and seventy of the chiefs of Israel went up:

Exodus 29:9

And put the linen bands round Aaron and his sons, and the head-dresses on them, to make them priests by my order for ever: so you are to make Aaron and his sons holy to me.

Leviticus 10:12

And Moses said to Aaron and to Eleazar and Ithamar, his sons who were still living, Take the rest of the meal offering from the offerings of the Lord made by fire, and take it for your food, without leaven, at the side of the altar, for it is most holy.

Numbers 16:39-40

So Eleazar the priest took the brass vessels which had been offered by those who were burned up, and they were hammered out to make a cover for the altar:

Numbers 18:7

And you and your sons with you are to be responsible as priests for the altar and everything on it, and everything inside the veil; you are to do the work of priests; I have given you your position as priests; and any other man who comes near will be put to death.

Treasury of Scripture Knowledge

Summary

But Nadab and Abihu died before their father, and had no children: therefore Eleazar and Ithamar executed the priest's office.

General references

Bible References

Died

Leviticus 10:2
And fire came out from before the Lord, burning them up and causing their destruction before the Lord.
Numbers 3:4
And Nadab and Abihu were put to death before the Lord when they made an offering of strange fire before the Lord, in the waste land of Sinai, and they had no children: and Eleazar and Ithamar did the work of priests before Aaron their father.
Numbers 26:61
Death overtook Nadab and Abihu when they made an offering of strange fire before the Lord.

General references

Numbers 26:61
Death overtook Nadab and Abihu when they made an offering of strange fire before the Lord.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain