Leviticus 10:1-3

Darby Translation

10 And the sons of Aaron, Nadab and Abihu, took each of them his censer, and put fire in it, and put incense on it, and presented strange fire before Jehovah, which he had not commanded them.

² And there went out fire from before Jehovah, and devoured them, and they died before Jehovah.

³ And Moses said to Aaron, This is what Jehovah spoke, saying, I will be hallowed in them that come near me, and before all the people I will be glorified. And Aaron was silent.