Ephesians 3:4 (KJV)

Passage

Whereby, when ye read, ye may understand my knowledge in the mystery of Christ)

Nearby Context

Ephesians 3:2 If ye have heard of the dispensation of the grace of God which is given me to you-ward:

Ephesians 3:3 How that by revelation he made known unto me the mystery; (as I wrote afore in few words,

Ephesians 3:4 Whereby, when ye read, ye may understand my knowledge in the mystery of Christ)

Ephesians 3:5 Which in other ages was not made known unto the sons of men, as it is now revealed unto his holy apostles and prophets by the Spirit;

Ephesians 3:6 That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:

Study Lenses

The verse centers on "whereby", "read", "understand", "knowledge", "mystery", and "christ". It is saying that the verse draws attention to "whereby" and "read", so its meaning should be read from those terms before moving to application.

The nearby context moves from verse 3's "How that by revelation he made known..." into verse 5's "Which in other ages was not made...", so "whereby" and "read" 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 "whereby" and "read" with trust shaped by these words, not by a vague optimism outside the passage.