The Old Law was a charter, in part of an agreement. The Levites had to do what was necessary to succeed, so God said if you must have slaves, these are the conditions. It was never encouraged by God, just granted for the sake of worldly progress.
Biblical morality is not subject to change, because it does not give that option. Slavery was instated in light of a necessity and system of doing things, which was much more mutual and for progressive and punitive purposes. There were not many resources then, setting slaves free often meant them just starving out in the desert- it was a fundamental working of mankind.
All your questions do not need to be answered, as well they shouldn't- playing 21 Questions with people who haven't done anything but basically grandstand through an entire thread_
The point is that for my 11 posts, there's an upward of three or four in between every single one of them- even if I'm just pertaining to one of them.
It's clear cut jumping, and their goading is out of control.