Numbers 3:4
Nadab and Abihu died in Jehovah's presence because they offered unauthorized fire in his presence in the Desert of Sinai. They had no children. So only Eleazar and Ithamar served as priests during the lifetime of their father Aaron.
Leviticus 10:1-2
Aaron's sons Nadab and Abihu each took an incense burner. They put burning coals and incense in it. Then in Jehovah's presence they offered this unauthorized fire.
Numbers 26:61
Nadab and Abihu died because they offered unauthorized fire in Jehovah's presence.
Treasury of Scripture Knowledge
Summary
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
Bible References
General references
Numbers 26:61
Nadab and Abihu died because they offered unauthorized fire in Jehovah's presence.
Joshua 21:10
These were given to the descendants of Aaron who were of the clan of Kohath and who were descended from Levi. Their assignment was the first to be made.