What does the voice of God sound like?

It does not matter if you believe or not. You have been hired to produce a biblical movie in which God speaks, perhaps a story of Adam and Eve or of Moses. How would you want God to sound? Would it be like the voice in the movie the Ten Commandments, very stern and authoritarian? Would it be like Darth Vader or Richard Burton or some political figure? Maybe you imagine a feminine or androgynous voice. I would go with something like Franklin Roosevelt.