Leviticus 10:1-2

Revised Standard Version

Nadab and Abihu

10 Now Nadab and Abi′hu, the sons of Aaron, each took his censer, and put fire in it, and laid incense on it, and offered unholy fire before the Lord, such as he had not commanded them. ² And fire came forth from the presence of the Lord and devoured them, and they died before the Lord.