Leviticus 10:1-2

Young's Literal Translation

10 And the sons of Aaron, Nadab and Abihu, take each his censer, and put in them fire, and put on it perfume, and bring near before Jehovah strange fire, which He hath not commanded them;

² and fire goeth out from before Jehovah, and consumeth them, and they die before Jehovah.