It was important that the Ephesians (and us along with them) understand exactly what Paul’s ministry was about. He was entrusted along with others (3:5) with declaring God’s revealed mystery. This secret (Gk. musterion) is that in Christ all become one people redeemed by God’s grace in Christ. According to Ephesians 3:10, God’s “intent was that now, through the church, the manifold wisdom of God should be made known,” not just to all mankind, but even to all those in the heavenly realms (spiritual world).