When Moshe’s cousin Korach challenged Moshe’s authority G-d instructed Moshe to conduct a test. Korach took up the challenge. Korach offered up incense used by the priests in the Temple and whoever’s incense was not acceptable would perish. Korach’s incense was not acceptable and thus he perished.
The Rebbe explains “Although they knew that unauthorized use of the incense would cause their death, Korach and his followers took up the challenge. They wished to experience the lofty service of the high priest even if it would cost them their lives.
In this sense, their motivations were pure, and we can learn from their example, similarly aspiring to the most uplifting spiritual experiences. Their error, which we must also learn from, was disregarding the absurdity of going against G‑d’s will in order to get close to Him.1”