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Revelation 12:3 And another sign appeared in heaven: Behold, a great red dragon, with seven heads and ten horns, and on his heads seven diadems.
Revelation 12:7-9 Now war arose in heaven, Michael and his angels fighting against the dragon. And the dragon and his angels fought back, but he was defeated, and there was no longer any place for them in heaven. And the great dragon was thrown down, that ancient serpent, who is called the devil and Satan, the deceiver of the whole world—he was thrown down to the earth, and his angels were thrown down with him.
Revelation 9:16,17 The number of mounted troops was twice ten thousand times ten thousand, I heard their number. And this is how I saw the horses in my vision and those who rode them: They wore breastplates the color of fire and of sapphire and of sulfur, and the heads of the horses were like lions’ heads, and fire and smoke and sulfur came out of their mouths.