If there's no God, nothing is right or wrong

[Deesse23]

There would have to be an objective moral standard, meaning binding everywhere in the universe, plus always leading to consequences if broken, ..

Then, according to christianity, the only "objective" moral, which is enforced, always, is: Belief in the christian god. Non-belief is the only unforgivable sin. Everything else can be forgiven = will potentially not have an effect.

[Sheldon]

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There you go trying to assert a rule again.  

No!!! There are no rules under atheism. None. That's my point, and you're only helping my argument.

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I think that some peoples moral values are complete dogshit.  That they deserve nothing more than ridicule and mockery.  Theistic moral values, for example.  That whole decider thing.

If a baby kills someone, it has done something wrong even if it doesn't know it. Though if there are no moral rules, the baby has done nothing wrong.

What if a deity kills someone? Like the deity depicted in the bible, what if it tortures a new-born baby to death over 7 days, as the deity in the bible is depicted doing? 

Either:
1. Torturing new-born babies to death is objectively moral.
2.  Torturing new-born babies to death is objectively immoral, and it follows that the deity is immoral. 
3. A deity can do whatever it likes, and so it follows that the claim, torturing new-born babies to death is immoral must be subjective.

[Mister Agenda]

David's kid, right? And this was supposed to be a punishment for David, the infant was collateral damage.

[The Architect Of Fate]

The obvious question for him is why, under theism, is it wrong to kill babies ? Because god says, so why should anyone care ? Because he can punish people for doing it ? Why does that make it wrong? Punishment and an alleged moral authority don't add up to objective morality.