““God shows covenant faithfulness to families through the generations, but in the last analysis the people of God are defined Christocentrically, not genealogically. The issue is not birth from the flesh but birth from the Spirit (John 3:6), just as the circumcision that marks God's people is not a fleshly surgery but a cleansing of the heart by the Spirit (Rom. 2:28-29; cf. Phil. 3:2-3).””
