God Revealed Himself as the Word and by the Word

God has chosen to reveal himself as the Word and by the Word. John 1:1 says, "In the beginning was the Word." Not in the beginning was the song, or in the beginning was the drama. God identifies his Son, who himself is God, as the Word. This is tremendously important. "In the beginning was the Word." The Son of God is the Word of God. He is God's communication to the world, God's Word.

The Place of Preaching in Worship - John Piper