There's a significant difference, morally, between "we condone this" and "we are trying very hard to ban this but not succeeding".
Slavery is the same as employment today but with improved workplace rules.
We still buy workers from outside the country just to harvest crops and do
not subject legal citizens to the same working conditions.
There are "workplace rules" in scripture for both the employer and worker
telling them how to act toward each other.
Does scripture support employment / slavery? Yes.
Does it support rules for employers for fair treatment? Yes
Does it cover "old" rules that have been superseded by
more improved work-place/life-place rules? Yes
Does it
specifically explain the old rules (that stick in your craw) have been replaced and improved? Yes
21 “You have heard that it was said to the people long ago,
‘You shall not murder, and anyone who murders will be subject to judgment.’
22 But I tell you that anyone who is angry with a brother or sister will be subject to judgment. Again, anyone who says to a brother or sister, ‘Raca,’
d is answerable to the court. And anyone who says, ‘You fool!’ will be in danger of the fire of hell.
38“You have heard that it was said, ‘Eye for eye, and tooth for tooth.
39 But I tell you, do not resist an evil person. If anyone slaps you on the right cheek, turn to them the other cheek also.
27“You have heard that it was said,
‘You shall not commit adultery.’
e
28 But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart.
43“You have heard that it was said,
‘Love your neighbor
i and hate your enemy.’
44 But I tell you, love your enemies and pray for those who persecute you,
45 that you may be children of your Father in heaven. He causes his sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous.
46 If you love those who love you, what reward will you get? Are not even the tax collectors doing that?
47 And if you greet only your own people, what are you doing more than others? Do not even pagans do that?