Moses is starting to develop signs of dementia in Numbers 16:4-11. First, he falls to his face and explains that God is going to judge them, not now, but tomorrow, because timeless beings enjoys procrastination! God will determine which of them is holy, but theyíll have to approach him with incense burning in censers. Moses just seems to make this up off the top of his head, and apparently, Godís going to go along with it, which is weird because we all know God prefers the smell of burning animals, not this perfumed crap.
Next, Moses rebukes the Levites, saying that theyíve gone too far. Seems like Moses should have opened with that rather than talking about incense, but the bible rarely follows a logical chronology. Also, in order for Mosesí statement to make sense, the majority of the 250 men should be Levites, but three out of the four leaders (Dathan, Abiram, and On) are Reubenites. Why do these Reubenites hold so much sway over the Levites? Reagrdless, Moses asks them, isnít it enough that God letís them perform manual labor for the priests, but now they want to -be- priests as well? Moses warns them against their pride by explains how Aaron is just too important to waste his time hearing their complaints. This is quite a turn in Mosesí character; wasnít he just wishing that every Israelite could be a prophet of God?
This story brings up some revealing aspects about Godís idea of a perfect priesthood. Spoiler alert, God is going to side with Moses and Aaron, and as his earlier rules prove, he is in favor of having a priestly caste. Only those born into the priesthood are to be priests. Of course, this is wholly contradictory to nearly all forms of Christianity today where believers think anyone can become a preacher. Most progressive societies had already abolished the idea of castes as nothing more than pure discrimination long before DNA evidence proved they were unwarranted, but God really loves his discrimination, so he makes it mandatory!