Numbers 16:37-38

³⁷“Speak to Eleazar the son of Aaron the priest, that he take up the censers out of the burning, and scatter the fire away from the camp; for they are holy,

³⁸even the censers of those who sinned against their own lives. Let them be beaten into plates for a covering of the altar, for they offered them before the LORD. Therefore they are holy. They shall be a sign to the children of Israel.”