What are the connotations of "ve'Lo Yih'yeh che'Korach vecha'Adaso"?
Rashi: The sign on the Mizbe'ach shall serve as a remembrance ... in order that the sin of Korach and his congregation should not repeat itself.
Ramban #2 and Targum Yonasan: (No man shall be so arrogant as to dispute the Kehunah like Korach and his congregation, because ultimately - Targum Yonasan) he will be destroyed, though not like Korach and his band of followers - with fire or by being swallowed up under the earth. 1
Sanhedrin, 110a: This Pasuk teaches us that, anybody who upholds Machlokes transgresses a La'av.
What does the Torah mean when it writes "Ka'asher Diber be'Yad Moshe Lo"?
Rashi #2 (citing Midrash) , Ramban #1 and Targum Yonasan: "be'Yad Moshe Lo" means concerning Korach
Rashi: Whenever the word Li, Lo or Lahem follows Dibur, it translates (not as 'to', but) as 'about'. .
Rashi: Which is why the Torah says here that no Zar, who is not from the seed of Aharon, may approach to bring the Ketores.
Rashi: Just as Moshe's hand was stricken in Egypt (See Sh'mos, 4:6). Indeed, that is what happened to King Uziyah who was stricken with Tzara'as on his forehead when he attempted to bring the Ketores - See Melachim, 26:19.