35 Then God sent lightning. The fire cremated the 250 men who were offering the incense. 36 God spoke to Moses: 37 "Tell Eleazar son of Aaron the priest, Gather up the censers from the smoldering cinders and scatter the coals a distance away for these censers have become holy. 38 Take the censers of the men who have sinned and are now dead and hammer them into thin sheets for covering the Altar. They have been offered to God and are holy to God. Let them serve as a sign to Israel, evidence of what happened this day." 39 So Eleazar gathered all the bronze censers that belonged to those who had been burned up and had them hammered flat and used to overlay the Altar, 40 just as God had instructed him by Moses. This was to serve as a sign to Israel that only descendants of Aaron were allowed to burn incense before God; anyone else trying it would end up like Korah and his gang.
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.