Millenial Kingdom

There are reasons to believe that this Age of Grace or the Church Age is nearing the end. Of course, no one knows when the Great Tribulation period of time will begin...only God the Father knows. Every Christian is waiting expectantly for the 2nd return of Jesus Christ. He left as a suffering Servant but one day He will return as a conquering King. That will not happen until the Tribulation period has been completed. What will happen then? The Average Christian has little or no knowledge of what will happen after the ecclesia or the "called" out will be raptured away by Jesus Christ. Our reward will not only be to spend eternity with Christ, but will also include special duties as we serve our Lord and Savior for 1000 years during the Millennial Kingdom. It will be a golden age during which our Lord and Savior will rule and reign from his palace and throne in Israel.
How will the earth be changed in the Millennial Kingdom?
What special role will the Jews play?
What will be the worldwide political and social structure?
What are the Bema Seat, the Great White Throne and the Sheep and Goat Judgments?
Will the Millennial Kingdom have sin and sinful people?
Who will rule and reign during this Kingdom?
How will this world end?
Where will we spend eternity?
What is the New Jerusalem?
What is the final fate of Satan and his demons?