I’m going to jump in with Jon on this one.
Christian morality (which ever version one may chose) can indeed form the basis of a community’s moral code. The same can be said of any religion and any secular moral code.
I think moisim’s objection is when these christians insist that their moral code is the only true universal moral code and must be accepted and practiced as such by all the rest of humanity, or else.
I see in the OP an objection to this special status on the part of the insistant christian and pointing out the relative nature and cultural bias through which these christian’s one true moral code has evolved.
But what I really want to challenge is the very notion that religion provides a firm foundation for one's moral or ethical standpoint.
Let me put words in your mouth, moisim, and feel free to spit them back out at me if they don’t taste right.
What you really want to challenge is the religionists’ notion that religion provides the only foundation for humanity’s moral or ethical standpoint. Specifically, you want to challenge the christian insistence that they have a special lock on human morality.