TEC said-
There are also some laws that were given due to the hard-heartedness of the Israelites. Christ said... "Moses gave you this law because your hearts were hard, but it was not this way from the beginning".
Oh, yes, no doubt there some hard-headed Israelites who refused to own slaves or engage in genocidal campaigns, and God had to FORCE them to do so. Those were the Israelites who weren't like the murderous Levi, who demonstrated an aptitude for mass murder, eg by wiping out the Shechem ites who tried to mix with his 'kind', or his sons, who led the slaughter of those 3,000 Israelites who worshipped the Golden Calf (which was made for them by Aaron, who got off scot-free).
Do you see how absurd that line of excusiology is, TEC?
And if you don't possess even a residue of independent morality within your soul to be able to see that murder is wrong for ANY reason, even in the name of God, you are a mindless borg (just one without a cult).
Adam