Already the second chain of reasoning is a joke "The Moral Argument 1 If God does not exist, objective moral values and duties do not exist. 2 objective moral values and duties do exist 3 THEREFORE, God exists " Rarely read such Schwachfug. What objective moral values exisitieren then? "Thou shalt not kill", perhaps? Why not hold off the relegious God faithful?
No, if you need a book to the reasoning of the faithful may be to show how ridiculous that is just the right thing.
