Why can’t you lot get new arguments? Why can’t you learn the Old testament is Jewish? Or are you afraid of coming off as Anti-Semitic? Why can’t you learn History?
1: Slavery as an institution in the Biblical Times was not like Roots, and they did not enslave Africans because of their skin colour. While this space is limited and I can’t discuss it in detail I will tell you that Slaves were seen as part of the Household, and were not to be slaves for live but only for a tenure of 7 Years.
Exceptions included Slaves caught in Wars.
Slavery was more about indentured servitude ( even if permanent) than being property, and was a common practice in all the Ancient World. It was more Humane than just outright killing people as thy had done previously and was actually more advanced.
Also, consider that God had to work with people where they were at and the development of the Colure had not become one that would see slavery as wrong.
2: Genocides are not what you pretend them to be. In tribal cultures, Warfare was often brutal. Still, usually they left people alive in most wars and only when they had to ensure the peoples they were at war with would not try to reclaim the Land or attack again would they all be whipped out. The reason is because in a Tribal Culture entire families stuck together and Tribal identity and Honour meant more than did individual identity. If you didn’t kill them all then their great grandchildren may come back to kill hour Great grandchildren.
Also, keep in mind the people who were ordered exterminated had Human Sacrifice, sex with Children, and sometimes engaged in Cannibalism. They were far, far worse than the Hebrews.
3: Stoning was a common form of execution, with easily available resources for use.
If you are going to condemn the Hebrew Culture for the way it lived in a world 3000 Years Ago, you should at least learn the Time period. it’s not like everyone else was civilised and nice and only the Hebrews acted this way, and they had to to live in that world.
Stop trying to judge people who lived 3000 Years Ago by modern Standards, and it’ll make far more sense.
History. read it some time.