Premise: There is an objective moral code which is gods.
A killer argument against this:-
Whatever that code is then it is a code not shared by all, in fact if I prepared a multiple choice questionnaire of 100 questions and gave it to 100 Christians I think I would get 100 different sets of answers.
That does not disprove an objective moral code. What it does prove though is that god is woeful at passing this code on.
In fact he is so ineffective why call him god?