Numbers 16:37-38

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.”