Hisgalus 12:4

And the tail of him drags down a third of the kokhavim (stars) of Shomayim and threw them to ha'aretz (the earth), and the Dragon NACHASH was standing before the ISHA (Woman) who was about to give birth, that when she gives birth to the YELED (CHILD, Moshiach) of her, he might devour the YELED.