And Korach, the son of Yitzhar... took (Num. 16:1)
How is it possible that a portion of the Torah is named after a sinner as great as Korach? The Torah wants to emphasize that we can learn something constructive even from Korach’s bitter controversy. Just as Korach wanted to be a High Priest, every Jew should similarly desire to draw near to G-d. (Likutei Sichot)
How can it be that an entire Torah portion derives its name from a wicked man who never repented of his misdeeds? Do not our Sages warn against even mentioning the name of an evil person? One must therefore conclude that Korach possessed a positive quality from which we can learn and emulate. In fact, Korach’s intense passion to serve as high priest stemmed from his desire to draw as close to G-d as is humanly possible, an aspiration which in itself is pure. Furthermore, it is said that in the Messianic Era, the Levites (of which Korach was one) will ascend to the level of kohanim. Korach’s error was that he wished to hasten the Redemption and enjoy its pleasures before it actually occurred, ignoring G-d’s overall plan for mankind. His underlying motivation was, however, worthy of emulation. (The Rebbe)
And you shall give there of the heave-offering of the L-rd to Aaron the Priest (Num. 18:28)
If, as we read in the Torah, Aaron the Priest passed away in the desert before entering the Land of Israel, how would the Jews be able to fulfill this commandment? Rather, this is an allusion to a time after the Resurrection of the Dead, when Aaron will again be alive and able to receive his due.