The mystery refers to the revelation of the gospel and the inclusion of the Gentiles in the promise of Christ.
In Colossians 1:26-27, Paul speaks of the mystery 'which hath been hid from ages and from generations but now is made manifest to His saints.' This mystery encompasses the gospel itself, which was foreshadowed in the Old Testament but fully revealed in Christ. Additionally, it signifies the radical inclusion of the Gentiles as fellow heirs in the body of Christ, as elaborated in Ephesians 3:6. This understanding stresses the unifying nature of the gospel, breaking down barriers between Jew and Gentile, and emphasizes God's plan for saving a diverse people unto Himself. Through this mystery, believers gain insights into God's redemptive purpose throughout history.
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