@BigDoggProblem
What do you think? Is it acceptable to own slaves? Is it acceptable to beat up a slave, as long as you don't kill them?
If I lived in ancient Israel and feared God I would not want to suffer capital punishment by kidnapping anyone. And if I was hiding such an escaped kidnapped person I also would not want to be punished for doing so according to the law God gave Moses.
Now I might be or receive an indentured servant who in seven years was mandated to be released, again according the law of Moses.
I might have to resort to making such a contract myself in fact should I come into poverty. I don't read the modern kind of racial slavery via kidnapping into the slavery mentioned in the bible.
The oldest book of the Bible
Job indicates that the patriarch's attitude towards his servants was that they were not inferior but equal in dignity to their master. This was uttered during the time of Abraham before the law of Moses was given.
Job 31:13-15
"If I have denied justice to my menservants and maidservants when they had a grievance against me, what will I do when God confronts me? What will I answer when called to account? Did not He who made me in the womb make them? Did not the same One form us both within our mothers?"
If you can find me an ancient document dating that far back with a similar expression of equality of dignity between master and servant I would like to see it.