First of all let me say the following information is relevant and important to this thread because if we can show an increased likelihood in the existence of God then that will certainly increase the likelihood the NT writers were telling the truth.
So then you must believe in an absolute morality outside of individual reasoning because I get the impression that if Germany and Japan and Italy had won the war and taken over the world you would still believe the Holocaust was evil.
A: I don't know what absolute morality outside of individual reasoning is.
Absolute morality are moral laws that exist regardless of subjective human opinions. And if there are "no" absolute moral laws outside of humanity then if Germany, Japan, and Italy won WWII and taken over the world then the Holocaust would not have been evil.
So, if you believe the Holocaust was evil no matter who won the war then you believe in absolute moral laws. Now the problem becomes who made these absolute moral laws. Moral Laws are made by a Lawmaker or Lawmakers, they are not made by primordial swamp scum. So if you believe in absolute moral laws outside of humanity's opinion then you must believe in either a God or Gods who created those Moral Laws; or you believe that swamp scum (aka non-living physical material) can make moral laws.
B: I do not believe in absolute morality.
Then you believe that if Germany and Japan had taken over the world the Holocaust would not be considered evil throughout most of the world.
C: Whenever I hear the term "Absolute morality" I've only heard in context of religion, in that morality is absolute and it can only come from God, and absolutely no place else.
This is true unless you believe absolute morality can be created out of swamp scum or some other non-living material...
E: I believe any genocide is evil. Even when God does it.
Then since you do not believe in absolute morality this is just an opinion of yours and you have no more right to your opinion than Hitler had of his opinion.
__
So I contend that since almost everyone believes the Holocaust and things like slavery and genocide and murder are evil (regardless of what others think or say), then this is an argument that there is an absolute morality in the world and thus this is an argument for the increased likelihood that a absolute moral lawgiver exists and that absolute moral lawgiver is either God or swamp scum (aka non-living physical material). Since it would seem impossible that swamp scum (aka non-living physical material) can create absolute moral laws this increases the likelihood that God exists.
And since I have shown the increased likelihood that God exists, I have shown the increased likelihood the NT writers were telling the truth.