Like Satan, #korah, et al, told a half-truth. All the people ARE holy, but Moses and Aaron didn't lift themselves up. God put them in charge, so rebelling against them was rebelling against God, but Korah wasn't content with the great honor that God had already given him. He wasn't entirely wrong, though, when he justified his mutiny by saying that all the people are holy.
#numbers 16:3 #korach