Revelation 12:3-4

Then another sign [of warning] was seen in heaven: behold, a great fiery red dragon (Satan) with seven heads and ten horns, and on his heads were seven royal crowns (diadems). [Dan 7:7] And his tail swept [across the sky] and dragged away a third of the stars of heaven and flung them to the earth. And the dragon stood in front of the woman who was about to give birth, so that when she gave birth he might devour her child. [Dan 8:10; Rev 12:9]