Numbers 16:39-40

39So Eleazar the priest took the bronze censers which the men who were burned had offered, and they hammered them out as a plating for the altar, 40as a 1reminder to the sons of Israel that 2no 3layman who is not of the 4descendants of Aaron should come near 5to burn incense before the Lord; so that he will not become like Korah and his company--just as the Lord had spoken to him 6through Moses.