Moses also said to Korah, “Now listen, you sons of Levi!
8. Hear, I pray you, ye sons of Levi. He addresses the whole body, and yet it is said that his discourse was directed to Korah alone, and this was because he had corrupted others of the Levites, and therefore is first summoned to God’s tribunal, so that the whole party might be at the same time included.
Here is, I. An account of the rebels, who and what they were, not, as formerly, the mixed multitude and the dregs of the people, who are therefore never named, but men of distinction and quality, that made a figure. Korah was the ring-leader: he formed and headed the faction; therefore it is called the gainsaying of Korah, Jde 1:11.
Commenting on Numbers 16:1-11
And Moses said unto Korah,.... Continued his discourse to him, as the head of the conspiracy, and the ringleader of it: hear, I pray you, ye sons of Levi; to whom also he had been before speaking; though Aben Ezra thinks the first speech was made to Korah and his company, and what follows to the Levites.