What message does the prophecy in Rev 20 illustrate?

What message does the prophecy in Rev 20 illustrate?

...is it not "FREEDOM" NO MORE (for 1,000 years)?

Rev 20:1-3..." Then I saw an angel coming down from heaven. He had in his hand a key to the bottomless pit. He also had a strong chain. He took hold of the dragon, that old snake, who is the Devil, or Satan, and chained him for 1,000 years. The angel threw the devil into the bottomless pit. He shut it and locked him in it."