The Mystery of Christ - Ephesians 3:1-6

All throughout the Old Testament there are 'mysteries.' That is, promises and hints of a future covenant that will bring justice and bring God's rule to the world. Until the beginning of the church, many of these things were not known, but have now been revealed through the writings of the New Testament. In this passage we find the resolution to one of these mysteries; how will Gentiles be included into the salvation narrative?