'Slave' in the Bible

" 'And when a man lies with a woman [and there is] an emission of semen and she [is] a female slave promised to a man, but she indeed has not been ransomed or freedom has not be given to her, [there] shall be an obligation to compensate; they shall not be put to death, because she has not been freed.

And a Sabbath of the land shall be for food for you: for you and for your slave and for your slave woman and for your hired worker and for your temporary residents who are dwelling as aliens with you;

" 'And if your countryman [who is] with you becomes poor, and he is sold to you, {you shall not treat him as a slave}.

Because they [are] my servants whom I brought out from the land of Egypt, they shall not be sold {as a slave}.

" 'As for your slave and your slave woman who are yours, from the nations that [are] all around you, from them you may buy a slave or a slave woman.