Passage
About which, when you read you can understand my insight into the mystery of Christ,
About which, when you read you can understand my insight into the mystery of Christ,
Ephesians 3:2 if indeed you heard of the stewardship of God’s grace which was given to me for you;
Ephesians 3:3 that by revelation there was made known to me the mystery, as I wrote before in brief.
Ephesians 3:4 About which, when you read you can understand my insight into the mystery of Christ,
Ephesians 3:5 which in other generations was not made known to the sons of men, as it was now revealed to His holy apostles and prophets in the Spirit:
Ephesians 3:6 that the Gentiles are fellow heirs and fellow members of the body, and fellow partakers of the promise in Christ Jesus through the gospel,
The verse centers on "read", "understand", "insight", "mystery", and "christ". It is saying that the verse draws attention to "read" and "understand", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 3's "that by revelation there was made known..." into verse 5's "which in other generations was not made...", so "read" and "understand" belong inside that flow. In Ephesians context, the local focus is grace, union with Christ, the church, and new creation.
A plain takeaway is to answer the verse's own emphasis on "read" and "understand" with trust shaped by these words, not by a vague optimism outside the passage.