Fun fact of the day: King David were not allowed into the assembly of the Lord, according to the Bible. And Jesus was the decendant of a daughter raping her father.
Ruth and Deuteronomy 23:1-3 are hints.
I will not stay long on that subject except noticing that condemning homosexuality is in the OT, which is a lovely can of worms and contradictions. So to decide which parts of the OT to keep is in the hands of human interpretations, a fun subject. God is horrible on the standard of good btw, unless you count genocide (many times), generational punishments, mind controlling people and then punish them for what they say during said mind control, etc, etc as good. That said, Christianisty is nicer than most religions, but not really thanks to God in the OT.
Anyway, to give an evolutionary example on morals, who are not absolute, but have a significant natural bias. That bias can in turn be overridden by say religion for example. First thing to remember is that morals can only be formed by interactions. If you're the only living being, there is no such things as morals, since the only one you can interact with are yourself and good and evil is irrelevant at that point (gives an interesting but heretical viewpoint on God learning morals with time btw).
So lets focus on interactions.
Murder: Outside the obvious factor of sexual reproduction, there's also the matter of survival. To kill a competitor (for the food or mates) about your own size is hard. Even harder is getting away fresh enough to survive the next day (notice that this still promotes some aggression). So even for solitary species, there's an evolutionary advantage to not kill member of their own specie, even if they're the same gender. For a cooperative specie like humans, this is significantly stronger. So strong that it's never the sole reason and most of the time not a factor at all, for murders.
You can do similar analyses on a lot of moral factors and also see why a behavior can be generally abhored, yet still remain.
But really, good and bad are defined what a group of people agreed on together. That's why for example the opinion of slavery has varied throughout the Christian world and its history, even despite that it should've been absolute according to you total realism. God has eternal slavery as an "appropiate" punishment for example.
Edit: on the point B) The fun stuff about your "atheism is sexist" is that it goes a much longer way to explain the historical sexism (although a lot of it has to do with inheiritence) than your claim that the Bible isn't sexist does it?
Anyway. The denial for a female to select thier natural partner can't be considered good for the female, ergo rape will always be considered bad for the female. Now, who's the fittest? The man who spends time and resources to feed and control his female slaves or the man cooperating with the females, so that the females will feed and sustain themselves? He also got good odds of converting the first man's females and ursup the first man. Ergo, cooperation with females are treated genetically favourly.
Bookmarks