If God is all-talking, then what does God's voice sound like? The big, obvious answer is it sounds like words, formed in my head as I read the written word guided by His Spirit.
But that is an old voice. A recorded track laid down millennia ago.
Or is it? It's hard to talk about God in any aspect as past tense. All creation and all time is present before him at once. For God it is always now. He is always "I am."
The written word is not an old voice. It is fresh and new and for me.