If I was a Jew, I am no longer a Jew, if I am in Christ Jesus. If I was a Gentile, I am no longer a Gentile, if I am in Christ Jesus. The body of flesh does not change here in this present scene. Yet that new creation is still in this body of flesh. The Believer is a new creation in Christ Jesus, yet the flesh container or tabernacle may be that of a Jew or a Gentile from his natural birth.
Old things are to pass away.
All things are to become new. In Christ, for the Believer, just the opposite is the reality. The inside has been cleansed and made white, but it is contained in a body of death, be it that of one born a Jew or one born a Gentile. The body of flesh or sin is not placed in Lord Jesus. There can never dwelleth no good thing in Lord Jesus.