What does the Bible say about pedigree and identity in Christ?

In the sermon, the preacher emphasizes that the people returning from Babylon could not prove their lineage and were thus excluded from participation in the priesthood and the blessings of Israel. This illustrates that earthly pedigree means nothing without spiritual authenticity in Christ. Galatians 6:12-13 discusses how those who seek to establish their identity through religious observance or status are misguided. Our true identity is in Christ, and we must rely on Him for our worth and acceptance before God, not on our ancestral ties or self-righteousness.