'Slave' in the Bible

There is [now no distinction in regard to salvation] neither Jew nor Greek, there is neither slave nor free, there is neither male nor female; for you [who believe] are all one in Christ Jesus [no one can claim a spiritual superiority].

Now what I mean [when I talk about children and their guardians] is this: as long as the heir is a child, he does not differ at all from a slave even though he is the [future owner and] master of all [the estate];

Therefore you are no longer a slave (bond-servant), but a son; and if a son, then also an heir through [the gracious act of] God [through Christ].

But the child of the slave woman was born according to the flesh and had an ordinary birth, while the son of the free woman was born in fulfillment of the promise.

But what does the Scripture say?“Cast out the bondwoman [Hagar] and her son [Ishmael],For never shall the son of the bondwoman be heir and share the inheritance with the son of the free woman.”

So then, believers, we [who are born again—reborn from above—spiritually transformed, renewed, and set apart for His purpose] are not children of a slave woman [the natural], but of the free woman [the supernatural].