The voice of God

As you know baby Caleb received a good number of books for his library during the summer baby shower thrown in his honor. I have had the pleasure of reading to him since the day we brought him home from the hospital, thanks in large part to these generous, thoughtful gifts from loved ones. I absolutely love reading to baby Caleb; we probably read about 2 books a day, mostly during feedings, while burping, or sometimes when he is wide awake (which isn't too often). We read stories about brown bears and about puppies who wear sweaters. We read stories about sloths in the rainforest and about tigers who like to be tickled. Many times, I simply read to Caleb aloud from Barbara Kingsolver's Prodigal Summer – the book I'm currently reading.
Through our storytime moments over the past six weeks I've become talented in the art of voices. I can imitate most of the characters in Caleb's books and I can do a mean barn animal impression. But there is one voice I have yet to master.
As we read through Caleb's library, we also read from the Jesus Storybook Bible daily. Now I can perform an amazing Daniel or Moses, but how can I be expected to do the voice of God?! Sometimes I do it loud and booming and sometimes I do it quiet and kind. But no matter what, I feel ill-equipped to imitate God's voice. How does one do it justice??