When the dragon pursued the woman who had given birth to a son, he was thwarted, so he prepared to fight against her other offspring.

Revelation 12:13-18

13 When the dragon realized that he had been thrown {that the angels had thrown him} down to the earth, he pursued the woman who had given birth to a son. 14 But the woman was given two wings like the wings of a very large eagle, in order that she might fly to a desolate place. That is a place that God has prepared for her. There she was taken care of {God’s angels took care of her} for three and a half years. The serpent, that is, the dragon, was not able to reach her there. 15 The serpent spewed water like a river from his mouth in the direction of the woman, in order that the water might sweep her away. 16 But the ground helped the woman by opening up and swallowing the river that the dragon spewed out from his mouth! 17 Then the dragon was very angry with the woman, so he went away to fight against the people who are like the rest of her descendants. They are the people who obey God’s commandments and who tell other people about Jesus (OR, hold fast to what Jesus taught them). 18 The dragon stood on the ocean shore.