The Greco-Roman institution of slavery was quite a different institution from what you might think, especially if your knowledge of slavery is derived mainly from American history before 1865. The events in the New Testament took place 1,800 years before then and in a completely different part of the world.
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Roman slavery corresponded most closely to contract employment in our day. Slaves were hard laborers, educators, personal advisors; they filled all occupational niches. Sometimes people sold themselves into slavery in order to pay off debts (this situation is depicted in the New Testament), and sometimes people saved up money to buy their own freedom (Paul commended slaves who did this).
Slaves were legally part of the family, although on a secondary level. The law required masters to provide their slaves with food, clothing, and shelter. There were legal penalties for mistreating slaves (although we might think them inadequate, they did exist). We think of slaves living in leaky shacks in the fields, but in Roman days, slaves lived in the house with the family, but not permanently, because if the master died, the family remained, but the slaves had to go. If a master fell on financial hard times, he had to sell or free the slaves; and if he freed the slaves, he was legally responsible to make sure that they could make a go of it in the world. A slave who had spent his whole life tutoring people in philosophy might need to be taught the realities of the marketplace and be trained in a trade, for example.
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...it's just THERE....that's all i can say about it....I honestly did not ask for it....but it is still there? 
