I will do my best.

I think sacrificing one's children to a deity is monstrous. I think for a deity to command child sacrifice is monstrous. I think genocide is monstrous. I think punishing someone whose ancestors are condemned for some reason is monstrous. I think sending bears to maul, dismember and kill children for the crime of ridiculing a bald person is monstrous. I think creating a world full of flawed creatures and then obliterating nearly all of them is monstrous. I think commanding the murder of mysterious women is monstrous. I think placing the alleged moral failure of one woman at the center of everything that is wrong with the world, leading to millennia of institutionalized sexism, is monstrous. You can fill a book with the aspects of Christianity I find monstrous. You can fill many. Three I would recommend are: The God Delusion by Richard Dawkins, The End of Faith: Religion, Terror, and the Future of Reason by Sam Harris, and god Is Not Great: How Religion Poisons Everything by the incomparable Christopher Hitchens.

You can also fill many books with what is good about Christianity, particularly Elman's particular brand of Christianity. But Christianity is not required to explain or motivate goodness in humans. Hence point two.

I am not on board with the idea that it was alright for God to kill the children of this society, no matter how bad the society was. There have been many cultures that were as bad as this? Why is it alright for God to distroy this one but not the others? Why did God not distroy the spanish inquisition if he was going to distory this culture for their evil?