“And another sign was seen in heaven, and, look! a great fiery-colored dragon, with seven heads and ten horns and upon its heads seven diadems;

Revelation 12:3,

 8. (a) What is the identity of the great fiery-colored dragon? (b) What is indicated by the dragon’s having seven heads, ten horns, and a diadem on each head?

⁸ This dragon is Satan, “the original serpent.” (Revelation 12:9; Genesis 3:15) He is a ferocious destroyer​—a seven-headed dragon, or devourer, that can completely swallow his prey. How strange he looks! Those seven heads and ten horns indicate that he is the architect of the political wild beast soon to be described in Revelation chapter 13. This beast also has seven heads and ten horns. Since Satan has a diadem on each head​—seven in all—​we can be sure that the world powers represented in that wild beast have been under his rulership. (John 16:11) The ten horns are a fitting symbol of the completeness of the power that he has exercised in this world.