Verse 3 And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.
Who or what is this red dargon? The bible should be used to explain itself and in so doing we see that the dragon makes reference to satan. Verse 9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him. Rev. 20:2 And he laid hold on the dragon, that old serpent, which is the Devil, and Satan, and bound him a thousand years. You would realise that the ten horns Seven heads and seven crowns is also similar to what Daniel saw. In Daniel 7 it is stated that these are kings or kingdoms, Rev 17 also speaks of the same. These are specific kingdoms coming out of the Roman Empire and satan seems to be leading them. I can not help but also notice that, 7 signifying completness in the bible, would imply that satan would have complete control of the world or influence over it. No wonder Dan 12:1 states And at that time shall Michael stand up, the great prince which standeth for the children of thy people: and there shall be a time of trouble, such as never was since there was a nation [even] to that same time: and at that time thy people shall be delivered, every one that shall be found written in the book.