That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:
Berean Study Bible (BSB) - Ephesians 3:6 >This mystery is that through the gospel the Gentiles are fellow heirs, fellow members of the body, and fellow partakers of the promise in Christ Jesus.
Textus Receptus (TR) - Ephesians 3:6 >εἶναι τὰ ἔθνη συγκληρονόμα καὶ σύσσωμα καὶ συμμέτοχα τῆς ἐπαγγελίας αὐτοῦ ἐν τῷ Χριστῷ, διὰ τοῦ εὐαγγελίου,