It is important to understand that Korach was no common rabble-rouser, and his supporters were no common street-urchins. The two hundred and fifty people who rallied to Korach’s call were “princes of the congregation, those called to the meetings, men of renown” (16:2).
That is to say, “they were the most distinguished of the community; ‘those called to the meetings’ – they were skilled in determining leap years and months; ‘men of renown’ – famous throughout the world” (Sanhedrin 110a).
Rashi (commentary to Sanhedrin 52b, s.v. למה תלמיד) states unequivocally that these 250 men were תַּלְמִידֵי חֲכָמִים, talmidei chachamim; and the Metzudat Zion (commentary to Ezekiel 23:23) calls them “gedolim” – Torah-leaders of the generation.
But maybe this should not be all that surprising: after all, Korach and his gang were continuing in the footsteps of the meraglim, who were also among the greatest Torah-leaders of the generation, and who so recently had led the nation into disaster by rejecting the Land of Israel.
Rabbi Yissachar Shlomo Teichtal Hy”d (1885-1945), in his seminal work “Em ha-Banim Semeichah”, has fascinating insights into the spies’ character and the implications for today.
Rabbi Teichtal, who was initially fervently anti-Zionist, changed his views entirely during the Holocaust; he wrote “Em ha-Banim Semeichah” while on the run from the Nazis in 1943, and was murdered on a train transporting prisoners from Auschwitz to Mauthausen on 10th Sh’vat 5705 (24th January 1945).
He wrote:
“The holy Zohar and the Shelah explain that selfish motives caused the spies to commit [their sin]. They feared that they were fit to be princes [only] in the desert, but once they enter the Land of Israel new princes would be appointed. Let this be an instructive lesson.
"Even the greatest gadol in Torah and righteousness should not trust himself when he opposes the movement to build the Land. He should not think that his intentions are fully for the sake of Heaven, for he is certainly no greater in Torah and righteousness than the princes whom Moshe sent. Consider and study this well and you will see that it is the truth” (Chapter 3).