To whom God willed to make known what is the riches of the glory of this mystery among the Gentiles, which is Christ in you, the hope of glory.
This mystery truth is available only for those who are saints—true believers ( 1 Cor. 2:7–16). The phrase to whom God willed to make known clearly indicates that the mysteries are not discovered by the genius of man but are revealed by the will and act of God. It is God’s purpose that His people know this truth. Of all the mysteries God has revealed in the New Testament, the most profound is Christ in you, the hope of glory. The Old Testament predicted the coming of the Messiah. But the idea that He would live in His redeemed church, made up mostly of Gentiles, was not revealed. The New Testament is clear that Christ, by the Holy Spirit, takes up permanent residence in all believers ( Rom. 8:9; 1 Cor. 6:19, 20; Eph. 2:22). The revelation of the riches of the glory of this mystery among the Gentiles awaited the New Testament (Eph. 3:3–6). Believers, both Jew and Gentile, now possess the surpassing riches of the indwelling Christ (John 14:23; Rom. 8:9–10; Gal. 2:20; Eph. 1:7, 17–18; 3:8–10, 16–19; Phil. 4:19). The church is described as “the temple of the living God; just as God said, ‘I will dwell in them and walk among them; and I will be their God, and they shall be My people’ ” (2 Cor. 6:16). Christ indwelling all believers is the source for their hope of glory and is the subject or theme of the gospel ministry. What makes the gospel attractive is not just that it promises present joy and help, but that it promises eternal honor, blessing, and glory. In the reality that Christ is living in the Christian is the experience of new life and hope of eternal glory.