Leviticus 10:1-4

¹Aaron's sons, Nadab and Abihu, set light to their incense burners using ordinary fire and put in incense, and in this way offered forbidden fire in the Lord's presence, something he had not authorized.

²Fire came out from the Lord's presence and burned them up. They died in the Lord's presence.

³Moses explained to Aaron, “This is what the Lord was talking about when he said: ‘I will show my holiness to those who approach me; I will reveal my glory so everyone can see.” But Aaron didn't reply.

⁴Moses called Mishael and Elzaphan, sons of Aaron's uncle Uzziel, and told them, “Come and carry away the bodies of your cousins and take them outside the camp, away from the front of the sanctuary.”