The consequences of Korah's "taking action" are clear: God destroyed all these who rose up against Moses and Aaron—against Him. Does this pattern look familiar? It should. It is the age-old and oft-repeated sin of pride manifesting itself in ingratitude. Satan did the same thing (Isaiah 14:12-15; Ezekiel 28:14-17). It was not enough for him to be a covering cherub at God's throne. It was not enough to have the lordship over the earth and one-third of the angels (Revelation 12:3). No, he wanted to resemble or compare to the Most High (Isaiah 14:14)! His pride led him to go to war against God, a battle he soundly lost (Luke 10:18). Revelation 12:7-10 prophesies that his pride will drive him to attempt another coup d'état before Christ's return.
This is where ingratitude can ultimately lead a person: into total rebellion against God. It lends to an individual feeling a false sense of worth, that he deserves more. If not checked, it becomes a plague of discontent that soon infects others, as Satan's ingratitude spread to other angels.
If this kind of attitude lands us in trouble, just what should our attitude be? A truly humble and grateful person will never rebel against God because he knows that even the very breath he breathes is a gift and calls for praiseful thanksgiving to the Father. Sharing this thanksgiving with others in the church works like soothing oil that helps to heal the body.