They incited a rebellion against Moses, along with 250 other leaders - Numbers 16:2
Korah was a strong man who organized a corp of leaders with the intention of usurping Moses' authority and installing his own very of the preisthood
He forgot what happened to Aaron and Miiam when they challenged Moses' leadership - Numbers 12
Korah was a special leader but he wanted more than what God had given him
God removed them from their positions and removed them from the earth altogether
Some of God's greatest leaders have been willing to rock the boat but they also have a strong grasp of respecting authority
When we submit to those in authority, we demonstrate a key condition for God's blessing: humility!