16:15 Respect not their offering - Accept not their incense which they are now going to offer, but shew some eminent dislike of it. He calls it their offering, though it was offered by Korah and his companions, because it was offered in the name and by the consent of all the conspirators, for the decision of the present controversy between them and Moses. I have not hurt one of them - I have never injured them, nor used my power to defraud or oppress them, as I might have done; I have done them many good offices, but no hurt: therefore their crime is without any cause or provocation.
16:12-15 Moses summoned Dathan and Abiram to bring their complaints; but they would not obey. They bring very false charges against Moses. Those often fall under the heaviest censures, who in truth deserve the highest praise. Moses, though the meekest man, yet, finding God reproached in him, was very wroth; he could not bear to see the people ruining themselves. He appeals to God as to his own integrity. He bade them appear with Aaron next morning, at the time of offering the morning incense. Korah undertook thus to appear. Proud ambitious men, while projecting their own advancement, often hurry on their own shameful fall.