Gal 3:23-29 KJV But before faith came,
we (JEWS) were kept under the law, shut up unto the faith which should afterwards be revealed. (24) Wherefore the law was
our (JEWS) schoolmaster to bring
us (JEWS) unto Christ, that
we (JEWS)might be justified by faith. (25) But after that faith is come,
we (JEWS) are no longer under a schoolmaster. (26) For
ye (GENTILES) are all the children of God by faith in Christ Jesus. (27) For as many of
you (GENTILES) as have been baptized into Christ have put on Christ. (28) There is neither
Jew (US) nor
Greek (YOU), there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus. (29) And if
ye (GENTILES) be Christ's, then are
ye (GENTILES) Abraham's seed, and heirs according to the promise.
It was a given that the believing Jews were Abraham's children. So Paul spoke to GENTILES in the church telling them THEY were Abraham's children without ever having bee under law like the Jews were.
Gal 4:1-11 KJV Now I say, That the
heir (JEWS), as long as he is a child, differeth nothing from a
servant (GENTILES), though he be lord of all; (2) But is under tutors and governors until the time appointed of the father. (3) Even so
we (JEWS), when
we (JEWS) were children, were in bondage under the
elements of the world (LAW): (4) But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law, (5) To redeem
them that were under the law (JEWS), that
we (JEWS) might receive the adoption of sons. (6) And because
ye (GENTILES) are sons, God hath sent forth the Spirit of his Son into
your (GENTILES) hearts, crying, Abba, Father. (7) Wherefore
thou (GENTILES) art no more a servant, but a son; and if a son, then an heir of God through Christ. (8) Howbeit then, when
ye (GENTILES) knew not God,
ye (GENTILES) did service unto them which by nature are no gods. (9) But now, after that
ye (GENTILES) have known God, or rather are known of God, how turn
ye (GENTILES) again to the
weak and beggarly elements (LAW), whereunto
ye (GENTILES) desire again to be in bondage? (10)
Ye (GENTILES) observe
days, and months, and times, and years (JEWISH FEASTS). (11) I am afraid of
you (GENTILES), lest I have bestowed upon
you (GENTILES) labour in vain.
The summary is that Jews were under schoolmaster of law to come to Christ and graduated from school to find Christ when He arrived. School was then OUT.
But the Gentile believers who were servants to idolatrous bondage before they were saved traded their servitude to LAW's bondage after they were saved by taking the school for Jews to be theirs, when the Jews were not even under law after Christ came!