It violates 'love thy neighbor as thyself'(Lk.10:27) and 'love worketh no ill to his neighbor'(Rom.13:10)
Slavery is in violation of both these commands, unless you think that making someone working for you without pay is not harming him.
How about thou shalt not steal?
You don't think the slaves were robbed of their wages?
'love thy neighbor as thyself'(Lk.10:27)
He didn't actually quote that for 1. (at least, not here)
For 2: Jesus explains that "your neighbor" is simply one who is down on his luck. Any man that needs help.
One can love a servant.
And in Timothy 6:1, slaves are called to revere their masters.
And you quoted a passage rather well, while avoiding the larger part of the same chapter. Romans 13 deals largely with submission to authority.
And as for "thou shalt not steal"
I could have sworn there was also a set of rules set aside in Exodus 22 that states that "if a man steals, and is unable to pay the owner back, he is to BE SOLD to pay for the debt."
That's right: slavery is used to make up for theft.
You are REALLY stretching the matter by applying those scriptures. Most slaves were cared for quite well.