Passage
according to the eternal purpose which he purposed in Christ Jesus our Lord;
according to the eternal purpose which he purposed in Christ Jesus our Lord;
Ephesians 3:9 and to make all men see what is the administration of the mystery which for ages has been hidden in God, who created all things through Jesus Christ;
Ephesians 3:10 to the intent that now through the assembly the manifold wisdom of God might be made known to the principalities and the powers in the heavenly places,
Ephesians 3:11 according to the eternal purpose which he purposed in Christ Jesus our Lord;
Ephesians 3:12 in whom we have boldness and access in confidence through our faith in him.
Ephesians 3:13 Therefore I ask that you may not lose heart at my troubles for you, which are your glory.
The verse centers on "purpose", "eternal", "purposed", "christ", "jesus", and "lord". It is saying that the verse draws attention to "purpose" and "eternal", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 10's "to the intent that now through the..." into verse 12's "in whom we have boldness and access...", so "purpose" and "eternal" 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 "purpose" and "eternal" with trust shaped by these words, not by a vague optimism outside the passage.