What are the connotations of "ve'Lo Yih'yeh ke'Korach ve'cha'Adaso"?
Rashi: The sign on the Mizbe'ach shall serve as a remembrance ... in order that the sin of Korach and his congregation shall 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
And what does the Torah mean when it writes "Ka'asher Diber be'Yad Moshe Lo"?
Rashi: Whenever the word "Li, Lo or Lahem follows Dibur it translates (not as 'to', but) as 'about'.
Rashi (citing Midrash): Or about Korach.
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 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, 96:11.