The demonstration of the Kingdom of Heaven is in power. With respect to those who have gone before, who have had only their level of revelation from the scriptures, remembering that we, too, only see the portion of the words of Jesus that have been entrusted to us, unless the Kingdom of God is demonstrated with power, we have not fully preached the Gospel (Romans 15:19).
And this power is founded upon a Kingdom, whose throne is righteousness and justice (Psalm 89:14). It is always in the context of exercising authority, while being under the authority of another (Matthew 8:9). A servant that is proven unfaithful to the will of the master, who goes around saying, “In the name of my master, whom I serve”, while not serving Him, will have that power taken away, and given to another.