Read Ephesians 3:6 Using Other Translations
That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:
This mystery is that the Gentiles are fellow heirs, members of the same body, and partakers of the promise in Christ Jesus through the gospel.
And this is God’s plan: Both Gentiles and Jews who believe the Good News share equally in the riches inherited by God’s children. Both are part of the same body, and both enjoy the promise of blessings because they belong to Christ Jesus.