Galatians 4:5-7, 22-31

so that He might redeem and liberate those who were under the Law, that we [who believe] might be adopted as sons [as God’s children with all rights as fully grown members of a family]. [Rom 11:17-24] And because you [really] are [His] sons, God has sent the Spirit of His Son into our hearts, crying out, “Abba! Father!” 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].

For it is written that Abraham had two sons, one by the slave woman [Hagar] and one by the free woman [Sarah]. [Gen 16:15; 21:2, 9] 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. Now these facts are about to be used [by me] as an allegory [that is, I will illustrate by using them]: for these women can represent two covenants: one [covenant originated] from Mount Sinai [where the Law was given] that bears children [destined] for slavery; she is Hagar. Now Hagar is (represents) Mount Sinai in Arabia and she corresponds to the present Jerusalem, for she is in slavery with her children. But the Jerusalem above [that is, the way of faith, represented by Sarah] is free; she is our mother. For it is written [in the Scriptures], “REJOICE, O BARREN WOMAN WHO HAS NOT GIVEN BIRTH; BREAK FORTH INTO A [joyful] SHOUT, YOU WHO ARE NOT IN LABOR; FOR THE DESOLATE WOMAN HAS MANY MORE CHILDREN THAN SHE WHO HAS A HUSBAND.” [Is 54:1] And we, [believing] brothers and sisters, like Isaac, are children [not merely of physical descent, like Ishmael, but are children born] of promise [born miraculously]. But as at that time the child [of ordinary birth] born according to the flesh persecuted the son who was born according to [the promise and working of] the Spirit, so it is now also. [Gen 21:9] 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.” [Gen 21:10] 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].