Two babies discussion.

[Jenny A]

Marriage for life, love your neighbor as yourself, and don't envy your neighbor is not original to the New Testament. You need to read some Greeks. The Babylonians managed love your neighbor as yourself.

They were also theists.

Yes, but their worship of gods did not supply, and was not driven by morality. Early moral philosophers did not appeal to the gods' actions or words to determine what was moral. You see, just because Christianity purports to supply morality, does not mean that all god worship does. Some does some doesn't. And yet both theists who don't appeal to god for morality and atheists have some notions of morality.

But it's okay if christian morality wasn't original.

Okay or not it's true. Jesus' moral teachings were not original.

As Paul stated in Romans, Chapter 1 - no one is without excuse, because God is evident in nature.

You appear to moving the ball here. Are you saying that morality, as a concept, is evidence of god? Because that's quite a leap. Human morality appears to be largely cultural changing depending on time, place, and group. It also appears to have an evolutionary component having to do with the mechanics of social living. You can see inklings of it in our closest relatives and in other social animals.

That morality or nature is evidence of god is just one more argument from ignorance.