With the most powerful storm in recorded history weakening but every bit as devastating as its predecessors, saint, sinner and blogger alike are again wondering if God really does use nature in retribution for sin. Bill Moyers, late of PBS and CBS television and the day's keynote speaker, cited the incredible devastation caused by Hurricane Katrina and linked it with the Genesis flood. He noted that millions of conservatives believe the biblical teaching that God brought the deluge to punish human sin and also accept "God-ordered genocide" elsewhere in the Old Testament. Others also used the Katrina moment to level...