Leviticus 10:1
The Death of Nadab and Abihu
1 Now Nadab and Abihu, the sons of Aaron, each ttook his censer and put fire in it and laid incense on it and offered uunauthorized1 fire before the Lord, which he had not commanded them.
Leviticus 10:6
6 And Moses said to Aaron and to Eleazar and Ithamar his sons, z“Do not alet the hair of your heads hang loose, and do not tear your clothes, lest you die, and bwrath come upon all the congregation; but let your brothers, the whole house of Israel, bewail the burning that the Lord has kindled.
Numbers 26:60
60 And oto Aaron were born Nadab, Abihu, Eleazar, and Ithamar.