Refuting Christians with their Own Bible

[SteveII]

It comes down to whether something is good because so and so said it is good, or because it's actually moral. In the first case it's circular and meaningless; in the second case, the authority is irrelevant. I figured out morality just fine on my own without having to read it in an ancient book. And it's no surprise that (nice) Christians ignore huge swathes of the supposed morality taught by their own book.

Good point. Christians would believe in the latter. Something is good because it is moral. God did not decree something moral. Because it is part of his essence to be moral, and he has made us aware of some of what that means, we are on good grounds for objective morality.