Numbers 16:35-40

35And there came out a fire from the LORD, and consumed the two hundred and fifty men that offered incense. 36And the LORD spoke to Moses, saying, 37Speak to Eleazar the son of Aaron the priest, that he take up the censers out of the burning, and scatter thou the fire yonder; for they are hallowed. 38The censers of these sinners against their own souls, let them make them broad plates for a covering of the altar: for they offered them before the LORD, therefore they are hallowed: and they shall be a sign to the children of Israel. 39And Eleazar the priest took the brasen censers, which they that were burnt had offered; and they were made broad plates for a covering of the altar: 40To be a memorial to the children of Israel, that no stranger, who is not of the seed of Aaron, should come near to offer incense before the LORD; that he may not be as Korah, and as his company: as the LORD said to him by the hand of Moses.