PZ is best when he writes about science, his expertise. He has just written a devastating critique of Daniel Friedmann's attempt to defend concordism, the view that the six days of creation in Genesis represent an unspecified literal chronological order in Genesis. I highly recommend it. All such attempts fail, all of them. If you want to read a book length treatment of other attempts to harmonize the Bible with itself and science get Robert Price and Edwin A. Suominen's excellent book, Evolving out of Eden: Christian Responses to Evolution.