So then ethically you think it would be ok to execute iraqi children because they belong to a heathen people and might grow up to be terrorists? In this case the parallel would be to bring the children back to america and then execute them. Condemning the child sacrifice of a foreign nation doesn't mean much when you demand the sacrifice of countless children, and killed countless children for no discernable crime. Apparently he's only opposed to children sacrificed to other gods.
Furthermore the nations that weren't in the promised land, if they didn't surrender they still killed all the men, women and children, except of course for virgin women. They could be taken back as one of their many wives, but only after shaving their heads, mourning for the death of her family for a for a month and then they get to be the wife of one of the men that just executed her entire family and all her friends. Furthermore divorce law didn't apply to them. While god condemned divorce of normal wives, these could be divorced for any reason whatsoever, so as long the man doesn't sell them for profit. That's from deuteronomy 21:12-14
That is some screwed up ethics. None of that is not designed with human rights in mind, that isn't designed to benefit humanity, that isn't designed to allay the suffering of all individuals involved. Any country that still had these laws would be considered grossly inhumane and barbaric, and would no doubt be lead by a psychotic dictator. It's not that we're in an age of grace, it's that a nation like that can't exist and call itself righteous with a straight face. After the jews lost thier military power, suddenly killing the infedels wasn't so important as gaining personal salvation through peaceful means.
And the verse about burning some one with fire isn't punishing them for killing somebody with fire, it's about a man that sleeps with both mother and daughter. All three are to be burned with fire. The god of the bible is hands down the most horrifying character ever written, and it's only more horrifying that people look to him as the supreme example of justice and mercy.
I'm not on your back, you seem to be a nice fellow. I'm on the bible's back, and I'm very willing to debate that it isn't any source of morality.