Revelation 12:9, 17

And the great dragon was thrown down, the age-old serpent who is called the devil and Satan, he who continually deceives and seduces the entire inhabited world; he was thrown down to the earth, and his angels were thrown down with him. [Gen 3:1, 14, 15; Zech 3:1; John 13:2; 2 Cor 11:3; Rev 20:8]

So the dragon was enraged with the woman, and he went off to wage war on the rest of her children (seed), those who keep and obey the commandments of God and have the testimony of Jesus [holding firmly to it and bearing witness to Him].