A Third of the Stars of Heaven
“And his tail drew the third part of the stars of heaven, and did cast them to the earth:” (Rev 12:4a KJV)
Many see this as the original fall of Satan when he persuaded a third of the angels to follow him. This could be true even is this passage is not a parenthetical account of past events. It could just be identifying what he had done. It could also refer to his destructive power against those that oppose him. If this is the case, John could be using the angels as examples of Satan’s destructive power.
The Great Red Dragon
” 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.” (Rev 12:3 KJV)
The great red dragon is of course Satan. It is interesting that the dragon is used as a symbol of Satan. In order to be used as a symbol, John had to have known about dragons and dragon legends.
The seven heads could refer to the seven world kingdoms from Egypt, Assyria, Babylon, Media, Persia, Greece, and Rome.