Take unto thee also Aaron thy brother with his sons, from among the children of Israel, that they may minister to me in the priest's office: Aaron, Nadab, and Abiu, Eleazar, and Ithamar.
And Nadab and Abiu, the sons of Aaron, taking their censers, put fire therein, and incense on it, offering before the Lord strange fire: which was not commanded them.
And Moses spoke to Aaron, and to Eleazar and Ithamar, his sons that were left: Take the sacrifice that is remaining of the oblation of the Lord, and eat it without leaven beside the altar, because it is holy of holies.