The book of Revelation is one of the more difficult books in the Bible to understand. Because of the prevalent use of symbolic language and Old Testament references, it requires much study on our part to get a firm grasp on the book. But if we simplify the message of Revelation, we see described a struggle between good and evil; those who are for God and those who are against God.
Revelation 17:14 contains what I believe is the main point of the book. “These will wage war against the Lamb, and the Lamb will overcome them, because He is Lord of lords and King of kings, and those who are with Him are the called and chosen and faithful.”
Satan and his forces are waging war against Christ and His kingdom. This is not talking about some future Armageddon. The war is being waged now. Numerous New Testament passages remind us of this fact (2 Cor. 10:3-4; Eph. 6:11-13; 1 Tim. 6:12; 2 Tim. 2:3; 4:7; 1 Pet. 2:11).
The interesting thing about this war is that the outcome is sure: “the Lamb will overcome them”. Christ’s army will be victorious in the end, no matter how strong the forces of evil may seem. We must decide whether we will fight for the Lord, or against Him.