The word made flesh. Peter also says the word of God is the message of the bible which will stand forever.
You will find people here who can point to that statement and call you an idolater. While I won't go so far, I must warn you that in Christianity the word of God and the
Word of God are two very different things/concepts.
The Word of God is Jesus Christ, God Incarnate, Emmanuel, Second Person of the Trinity. He is spoken of in John 1 as the Light that shone among us and was not received. He is the I Am and is uncreated. He is called "The Word" because a word is something spoken from a speaker to a listener in order that the listener will understand the speaker - in this case, Jesus is the perfectly representative Word of God, and to the extent that any person knows Jesus the Word of God he also knows God who spoke this Word.
The word of God is the Scriptures, written by men of God over the ages, canonically compiled and agreed on by Spirit-filled consensus in the official councils of the church. They are written and read to point to the Word and through the Word to God Himself. The key difference is that they are
created. The word records God's historical dealings with man and since God is perfect and true, anything God
does must also reflect something of who He
is. As such, the word does indeed bring us knowledge of God. However this knowledge is a limited knowledge, in the sense that only the Word Jesus can say that "whoever knows Me knows the Father". This does not take away from its infallibility or its inerrancy; however, it must be noted that by necessity the word must be interpreted before it is understood, and such interpretations do not inherit the infallibility and inerrancy of the word itself. The word is not the co-eternal Word of God of John 1. The word is eternal in the sense that it is something God has revealed about Himself, and since God is eternal and true He will eternally never contradict something He has revealed about Himself.
The idea of an eternal, uncreated, written word coming down from Heaven is the appropriate idea of
Muslim revelation, not Christian.