The Written Word is the Bible. What would you tell someone if they were to ask you why they should consider the Bible to be different from any other book?
The word of God is God revealing Himself by words written in a book.
The Word of God is God revealing Himself by manifesting Himself in flesh and now has a glorified body.
When we say the word of God by words written it should probably not be a capital but only a capital when it relates to Jesus.
Isa 41:21 Produce your cause, saith the LORD; bring forth your strong reasons, saith the King of Jacob.
Isa 41:22 Let them bring them forth, and shew us what shall happen: let them shew the former things, what they be, that we may consider them, and know the latter end of them; or declare us things for to come.
Isa 41:23 Shew the things that are to come hereafter, that we may know that ye are gods: yea, do good, or do evil, that we may be dismayed, and behold it together.
Isa 41:24 Behold, ye are of nothing, and your work of nought: an abomination is he that chooseth you.
Isa 41:25 I have raised up one from the north, and he shall come: from the rising of the sun shall he call upon my name: and he shall come upon princes as upon morter, and as the potter treadeth clay.
Isa 41:26 Who hath declared from the beginning, that we may know? and beforetime, that we may say, He is righteous? yea, there is none that sheweth, yea, there is none that declareth, yea, there is none that heareth your words.
Isa 41:27 The first shall say to Zion, Behold, behold them: and I will give to Jerusalem one that bringeth good tidings.
Isa 41:28 For I beheld, and there was no man; even among them, and there was no counsellor, that, when I asked of them, could answer a word.
Isa 41:29 Behold, they are all vanity; their works are nothing: their molten images are wind and confusion.
God identifies Himself as the one true God by telling us the end from the beginning and said no other person or religion can do that.
God told us the whole history of mankind starting with Adam and Eve until the millennial reign of Christ on earth and tells us beyond that when the saints are at the New Jerusalem a place where sin has never been and in will never be.
Prophesy is a good way to identify God's word as different from any other book ever written in the history of mankind.
And it is a good witnessing tool to reach out to people that God's word is true for things have happened in the past they claim happened that God told us before that time and they can see them pass today what the saints have been saying that God told us years ago.
Even the world prophesies when they say that the Bible is not true for they are saying in the future that Jesus is not coming back and none of the things the saints say concerning the future will come to pass.