Really?
I am a born again in Christ, spirit baptized, water baptized married female mixed tribal ancestry Gentile and a mother and a grandmother.
Being in Christ does not make me Jacob's seed, born of those who are the namesake people of the New Man name: in Christ, I do not yet have my body of adoption which will be renamed "Israel" after the flesh nature of it is elementally dissolved and reformed; which name only the namesake people have by natural right until that Day of transformation and adoption.
The adoption pertains to Israel, says Paul. They have the promise that we gentile believers receive adoption into, by faith, now. -and they are not all cut off the Israel tree, and they are not Gentiles who are Jacob's seed and believers in Christ: they are still male and female Jews.
Paul said He was a circumcised male Jew, of the tribe of Benjamin; a believer, born again, spirit baptized, tongues speaking, singing, praying person, and unmarried.
My husband is not a female and Paul is not a female and I am not a male, but Paul and my husband and I are all born again in Spirit, into the Living Spirit, and are not born again in our bodies of flesh, yet: Paul already has the name of adoption by natural birth, but my husband and I will get it when our bodies are transformed and our DNA no longer is written in "Adam", but written in "Israel.
Jesus never made Jews into Gentiles nor Gentiles into Jews, nor males into females nor females into males.
It is a sin to blaspheme God by taking away our personal identity in our bodies of flesh, while we live in them, and trying to take away our ethnic heritage as Jews and Gentiles, whether born again in Christ or not.