“Rev. 19:15 (AMP) From His mouth goes forth a sharp sword with which He can smite (afflict, strike) the nations; and He will shepherd and control them with a staff (scepter, rod) of iron. He will tread the winepress of the fierceness of the wrath and indignation of God the All-Ruler (the Almighty, the Omnipotent).
His name is called "The Word of God" Revelation 19:13. This speaks of a person, and He is no other than Jesus Christ the Son of God. But Christ is not the Word of God referred to in this text. The Spirit is Christ's sword, rather than Christ the sword of the Spirit: "Out of his mouth goes a sharp sword, that with it he should crush the nations" Revelation 19:15.
When the earth had only a few people, and they lived a long time, God declared His mind by dreams and visions and by immediate revelations to faithful witnesses, who in turn instructed others. They lived so long that three holy men were able to preserve the purity of religion by tradition from Adam's death until the time just prior to the Israelites' going down to Egypt. Thus God delayed committing His will to writing because it was safely kept by a few trustworthy men.
But after the age of man's life was shortened and the population multiplied, God wrote the Ten Commandments with His own finger on tables of stone to keep His people from idolatry and corrupt worship. Later He commanded Moses to write the other words he had heard from Him on the mount; and all the while God continued to demonstrate His will by supernatural revelations.
Finally, it pleased God for His sacred Word to be finished by Christ the great Teacher of the church, and by the apostles, His public notaries, for saints to use until the end of time. A curse from Christ's own mouth belongs to anyone who adds or takes away from God's written Word: "If any man shall add unto these things, God shall add unto him the plaques that are written in this book: and if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book Revelation 22:18-19.”Quoted material from, ”The Christian in Complete Armour Daily Readings in Spiritual Warfare” by Gurnall and James S Bell. http://www.moodypublishers.com/pub_productDetail.aspx?id=41823&pid=53617