The Christians I grew up around didn't have any problem explicating the whole murder of humanity thing as being the 'old way' their god expressed his disapproval. Of course, he was always regretful afterwords and made empty promises like rainbows.
I came to picture this god as being much like a controlling abusive husband.
This is why it should be banned from all classrooms for its content. It's much worse than
Huckleberry Finn...or even the Merriam Webster Dictionary of the English Language. It's even worse than the collected works of Shakespeare and all it's smut.