Passage
You may be able to comprehend, with all the saints, what is the breadth and length and height and depth,
You may be able to comprehend, with all the saints, what is the breadth and length and height and depth,
Ephesians 3:16 That he would grant you, according to the riches of his glory, to be strengthened by his Spirit with might unto the inward man:
Ephesians 3:17 That Christ may dwell by faith in your hearts: that, being rooted and founded in charity,
Ephesians 3:18 You may be able to comprehend, with all the saints, what is the breadth and length and height and depth,
Ephesians 3:19 To know also the charity of Christ, which surpasseth all knowledge: that you may be filled unto all the fulness of God.
Ephesians 3:20 Now to him who is able to do all things more abundantly than we desire or understand, according to the power that worketh in us:
The verse centers on "able", "comprehend", "saints", "breadth", "length", "height", and "depth". It is saying that the verse draws attention to "able" and "comprehend", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 17's "That Christ may dwell by faith in..." into verse 19's "To know also the charity of Christ...", so "able" and "comprehend" 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 "able" and "comprehend" with trust shaped by these words, not by a vague optimism outside the passage.