'Slave' in the Bible

Am I now trying to gain the approval of people, or of God? Or am I trying to please people? If I were still trying to please people, I would not be a slave of Christ!

There is neither Jew nor Greek, there is neither slave nor free, there is neither male nor female -- for all of you are one in Christ Jesus.

Now I mean that the heir, as long as he is a minor, is no different from a slave, though he is the owner of everything.

So you are no longer a slave but a son, and if you are a son, then you are also an heir through God.

For it is written that Abraham had two sons, one by the slave woman and the other by the free woman.

But one, the son by the slave woman, was born by natural descent, while the other, the son by the free woman, was born through the promise.

But what does the scripture say? "Throw out the slave woman and her son, for the son of the slave woman will not share the inheritance with the son" of the free woman.

Therefore, brothers and sisters, we are not children of the slave woman but of the free woman.