
OK, so Adam and Eve were created "good" by god, and what they did was "good" until they ate the fruit, right? Well, after they ate the fruit is when they realized they were naked and were embarrassed by it. Apparently, before they ate the fruit, they were naked and they realized afterwards that it is bad to be naked. But, they were wholly good before eating the fruit even though they were naked.
This creates a contradiction. Either they were good when they were naked and it is still good to be naked, which modern Xians don't agree with and certainly those who wrote the Bible didn't agree with. Or, they were not good when they were naked, meaning that there was sin before they ate the apple. Which is it?
There is another way, of course, but it requires the theist to resort to relative or situational morality. This, however, is anathema to most Xians in that they claim to believe in absolute morality, so this option is not actually open, no matter how often they cling to relative morality when it suits their whims.