I've been studying Revelation 12:2 where John sees a Red Dragon with seven heads with crowns and a tail. To which John relates to his readers that the image is of the Devil, Satan.

When I look at the Dragon with seven heads I see John employing a metaphor for the seven worldly kings / kingdoms that dominate over the children of Israel. What I also see is that John relates the dragon to Satan. If I understand this right then John would be employing a 'double metaphor'. One for the Dragon as the seven kings / kingdoms and another for Satan as the sinful flesh of men.

These two are interwoven together that is why Satan is described as the dragon with seven heads and John describes the Beast of the sea (humanity) having seven heads. The seven gentile nations that dominate over Israel is given their power by sinful flesh of men.

But however you tend to interpert those passages, what I really want to hear from you is if my 'double metaphor' is possible and a good way to interpert?