Revelation 12:3-4

Then another ominous sign (wonder) was seen in heaven: Behold, a huge, fiery-red dragon, with seven heads and ten horns, and seven kingly crowns (diadems) upon his heads. [Dan. 7:7.] His tail swept [across the sky] and dragged down a third of the stars and flung them to the earth. And the dragon stationed himself in front of the woman who was about to be delivered, so that he might devour her child as soon as she brought it forth. [Dan. 8:10.]