armourbearer, I don't think the idea that 'moral values exist' is presupposed in the moral argument. That is a premise that is argued for.

You are right in saying that in TAG the possibility of moral values is said to only make sense if God exists. To be honest, I don't see any relevant difference in saying

1)If there is a universal moral law, then there must be a universal moral lawgiver.
2)There is a universal moral law.
3)Therefore, there must be God.

and

1)If a universal moral law is possible, then there must be God (because the precondition of a universal moral law being possible is God's existence).
2)A universal moral law is possible
3) Therefore, there must be God

__________________
Caleb
Trinity Baptist Church
Spokane, WA