Paul proclaims that Gentiles are 'fellow body members' with Jews in Christ, using a rare compound adjective to stress corporate unity. The term appears only in Ephesians 3:6, intensifying the body metaphor—not merely included but organically joined. Spanish 'miembros del mismo cuerpo' and German 'Mitleib' (co-body) preserve the anatomical imagery, essential to Paul's vision of the church as a single organism transcending ethnic division, where Gentiles are not grafted onto a Jewish body but co-constitutive members of Christ's body.