35 And fire came out from the Lord and consumed the 250 men offering the incense. 36 [1] Then the Lord spoke to Moses, saying, 37 "Tell Eleazar the son of Aaron the priest to take up the censers out of the blaze. Then scatter the fire far and wide, for they have become holy. 38 As for the censers of these men who have sinned at the cost of their lives, let them be made into hammered plates as a covering for the altar, for they offered them before the Lord, and they became holy. Thus they shall be a sign to the people of Israel." 39 So Eleazar the priest took the bronze censers, which those who were burned had offered, and they were hammered out as a covering for the altar, 40 to be a reminder to the people of Israel, so that no outsider, who is not of the descendants of Aaron, should draw near to burn incense before the Lord, lest he become like Korah and his company--as the Lord said to him through Moses.

Matthew Henry's Commentary on Numbers 16:35-40

Commentary on Numbers 16:35-40

(Read Numbers 16:35-40)

A fire went out from the Lord, and consumed the two hundred and fifty men that offered incense, while Aaron, who stood with them, was preserved alive. God is jealous of the honour of his own institutions, and will not have them invaded. The sacrifice of the wicked is an abomination to the Lord. The censers are devoted, and, as all devoted things, must be made serviceable to the glory of God. This covering of the altar would remind the children of Israel of this event, that others might hear and fear, and do no more presumptuously. They brought destruction on themselves both in body and soul. Thus all who break the law and neglect the gospel choose and love death.