https://www.mljtrust.org/sermons-online/ephesians-3-2-7/the-mystery-of-christ/

What is the mystery of Christ? Why did God wait so long for Him to be revealed? In this sermon on Ephesians 3:2–7 titled “The Mystery of Christ,” Dr. Lloyd-Jones explores the importance and uniqueness of the apostles and the glorious message not revealed until the New Testament. The mystery of the gospel has been revealed and can now be understood. It is not the vague feelings found in mysticism but the one true gospel. Through the recounting of Paul’s imprisonment to the Ephesians, Paul encourages them to stay strong in the faith. That the mystery that has been revealed is true, marvelous, and worth believing above all else. It is worth the imprisonment that Paul is joyfully enduring. They needn’t worry about present circumstances and his imprisonment but should rather glory in their salvation and in the gospel. God’s plan of salvation is a wondrous thing and worth contemplating. No one’s intelligence could ever unravel this wondrous mystery. Dr. Lloyd-Jones soberly reminds the listener that they must be enlightened by the Holy Spirit in order to understand.