Leviticus

And Nadab and Abihu died, when they offered strange fire before the Lord.

And the Lord spake unto Moses after the death of the two sons of Aaron, when they offered before the Lord, and died;

And there came out a fire from the Lord, and consumed the two hundred and fifty men that offered incense.

And there came a fire out from before the Lord, and consumed upon the altar the burnt offering and the fat: which when all the people saw, they shouted, and fell on their faces.

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.