Leviticus 10:1-2 NIV

The Death of Nadab and Abihu

1 Aaron’s sons Nadab and Abihu took their censers, put fire in them and added incense; and they offered unauthorized fire before the LORD, contrary to his command.

References for Leviticus 10:1

2 So fire came out from the presence of the LORD and consumed them, and they died before the LORD.

References for Leviticus 10:2