"Satan exults that he is regarded as fiction. All should understand that satan was once an exalted angel. His rebellion shut him out of heaven, but did not destroy his powers and make him a beast. Since his fall he has turned his mighty strength against the government of heaven. Satan has originated fables with which to deceive. He commenced in heaven to war against the foundation of God's government, and since his fall has carried on his rebellion against the Law of God, and has brought the mass of professed Christians to trample under their feet the fourth commandment, which brings to view the living God. No literal devil, and probation after the coming of Christ are fast becoming popular fables. The scriptures plainly declare that every person's destiny is forever fixed at the coming." Testimonies for the Church vol.1, p.342 E.G.W.
And there was war in heaven: Michael and his angels fought against the dragon;
and the dragon fought and his angels,
Revelation 12:7