When angels sinned, God did not let them go free without punishment. No! God sent them to hell. God put those angels in caves of darkness. They are being held there until the judgment.
Then I saw another powerful angel coming down from heaven. The angel was dressed in a cloud. He had a rainbow around his head. The angel’s face was like the sun, and his legs were like poles of fire.
The angel threw the snake into the bottomless pit and closed it. The angel locked it over the snake. The angel did this so that the snake could not trick the people of the earth until the 1,000 years were ended. After 1,000 years the snake must be made free for a short time.