The Kingdom of Heaven has a King named Jesus Christ! Do you realize what this means? In most areas God at this time allows His authority to be challenged or ignored for man has free will to choose whom he will serve. But in the Kingdom there is no such freedom. Jesus states in Matthew 7 that only he who does the will of the Father will enter the Kingdom of Heaven.
Most Christians believe that they are citizens of the Kingdom automatically and claim privileges because of their citizenship. But few have ever considered the other side of the coin -- the responsibility and eligibility of being a subject of the King.
"The Kingdom of God stands for: God shall rule. This means a constant conflict with man shall rule. Either God is sovereign, or man is sovereign. One of the two must be untrue." (Klaus Bockmuhl) What does "God shall rule" mean? If God is sovereign then He makes all decisions on all matters in the Kingdom and in the lives of its citizens. He issues all orders. "He is the instructor in all matters concerning the Kingdom. He is the one who assigns us to our place, gives us daily instructions, interprets our situation in the light of the larger scope of the Kingdom and in God's aim for history and decides the steps and actions to be taken, assessments that far exceed human ability or reasoning." (Klaus Bockmuhl)
Have you prayed the Lord's Prayer lately? "Thy Kingdom come, Thy will be done on earth as it is in heaven"? There is nothing you can do to see that God's will is done on the earth today but you can see that it is done in that little part of the world that belongs to you.