What does the Bible say about Jews and their identity?

In Romans 2, the Apostle Paul emphasizes that being a Jew is not merely a matter of physical lineage but involves a deeper spiritual reality. Paul states, 'For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh' (Romans 2:28). True circumcision is a matter of the heart, signifying a relationship with God grounded in His grace and purpose. This distinction indicates that identity in Christ supersedes ethnic backgrounds and is rooted in divine election.