DVAR TORAH - parshas korach:

Korach's complaint was that "the entire congregation is holy" [Bamidbar, 16:3]. Rashi, in the name of the Midrash Tanchuma, explains, "Everyone heard 'I am the L-rd your G-d' at Sinai." Reb Shaul points out that the answer to this claim is alluded to in the very next verse [16:4]: "And Moshe heard, and fell upon his face." Indeed, everyone heard Hashem at Mount Sinai, but not all these "hearings" were the same. When Moshe Rabbeinu heard Hashem, he fell upon his face, indicating that he was ready to die for Hashem [mesiras nefesh l'misa] as the Zohar [Part 3, 116b] explains. (Translator's note: by falling upon his face, it was if he fell down dead). For Moshe, this hearing brought him to serve Hashem with his entire being - heart and soul 

(Modzitz.org)