“Then bring forward to yourself your brother Aaron, and his sons with him, from among the sons of Israel, to serve as priest to Me—Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron’s sons.
Now Nadab and Abihu, the sons of Aaron, took their respective firepans, and after putting fire in them, placed incense on the fire and offered strange fire before the Lord, which He had not commanded them.
Then Moses spoke to Aaron, and to his surviving sons, Eleazar and Ithamar, “Take the grain offering that is left over from the Lord’s offerings by fire and eat it as unleavened bread beside the altar, for it is most holy.