Numbers 16:35-40

16:35 Then a fire went out from the Lord and devoured the 250 men who offered incense.

The Atonement for the Rebellion

16:36 (17:1) The Lord spoke to Moses: 16:37 “Tell Eleazar son of Aaron the priest to pick up the censers out of the flame, for they are holy, and then scatter the coals of fire at a distance. 16:38 As for the censers of these men who sinned at the cost of their lives, they must be made into hammered sheets for covering the altar, because they presented them before the Lord and sanctified them. They will become a sign to the Israelites.” 16:39 So Eleazar the priest took the bronze censers presented by those who had been burned up, and they were hammered out as a covering for the altar. 16:40 It was a memorial for the Israelites, that no outsider who is not a descendant of Aaron should approach to burn incense before the Lord, that he might not become like Korah and his company – just as the Lord had spoken by the authority of Moses.

Numbers 18:7

18:7 But you and your sons with you are responsible for your priestly duties, for everything at the altar and within the curtain. And you must serve. I give you the priesthood as a gift for service; but the unauthorized person who approaches must be put to death.”