What are the connotations of "Vayakumu lifnei Moshe ... "? Why did they stand before Moshe?
Rashi: Refer to 16:1:1:1.
Targum Yonasan: They stood before Moshe with Chutzpah, dressed in cloaks of Techeiles and Tzitzis of Techeiles, 1 despite Moshe instructions to the contrary.
Why does the Torah write "Vayakumu lifnei Moshe"
Seforno: When Korach, Dasan and Aviram went to complain before Moshe and Aharon, 1 the two hundred and fifty men made a point of being present in the guise of innocent bystanders, and when the three troublemakers began to complain, they joined in the foray, in order to attract as many people as possible to join the rebellion. 2
Who were the two hundred and fifty men?
Rashi: Refer to 16:2:4:1.
Ramban (citing R. Chananel) and Seforno: They were from the tribe of Levi, 2 who thought that their entire tribe had been chosen for the Kehunah and that Moshe had taken it for his brother and for himself. 3
Ramban (on Pasuk 19): This is according to the Gemara in Zevachim, 112b, who maintain that originally, the Avodah was performed by the Bechoros. According to the simple P'shat however, prior to the appointment of Aharon and his sons, all of Yisrael were eligible to bring Korbanos
To whom is "Nesi'ei Eidah, Keri'ei Mo'ed" referring to?
Rashi: It is referring to Elitzur ben Shede'ur, the Nasi of Re'uven and his friends