The Voice.

Probably not a book that a great deal are familiar with. The book centres around the idea that the voice of God could somehow be recorded, through something called Cosmic Background Radiation. Basically, they take rocks from where God's spoken, do stuff to them, and they've got God's voice. That's the idea.

Thing is, obviously this project isn't so popular with some. Especially since they found that the same voice said it was God and said it was Jesus Christ, which some people wouldn't be too happy about. As such, the two working on it are captured, and their deaf daughter seeks the aid of her uncle, an ex-Special Forces Agent. Who is himself being tailed by an FBI agent. Who was herself not told the whole story. You get the idea.

It raises some interesting moral/religious questions, even venturing into ground such as whether people from other religions (such as Islam) will go to heaven or not. But as well as that, it's also a pretty decent action/adventure, with some good comedy lines thrown in there - "'Crap', that's like a G-rated word." Ah. Kids. :P