Matthew Henry on Numbers 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.