"Then God said, "Let there be light"; and there was light. " - Genesis 1 V3

"Now out of His mouth goes a sharp sword, that with it He should strike the nations. And He Himself will rule them with a rod of iron. He Himself treads the wine-press of the fierceness and wrath of Almighty God." - Revelation 19 V15

It is the spoken Word of God that created everything. So powerful is His Word that God just spoke and all seen and unseen things came into existence. Also, during the war of Armageddon, when Christ will return with His saints, He will just speak the Word and all who waged war against Him will be slain. The Bible also teaches that the Word of God is powerful and sharper than any two edged sword. The Word of God is our weapon and we can use it to keep the devil away. Thank God for the Word!