A frequent misinterpretation of Ephesians 3:3 is assuming it endorses ongoing personal revelations for every believer that carry apostolic authority or introduce new doctrines beyond Scripture, whereas this was uniquely given to Paul as an apostle to proclaim the specific mystery of Jew-Gentile unity in salvation; others erroneously treat the 'mystery' as an enduring enigma rather than a truth once concealed but now fully unveiled, or isolate the verse to justify subjective spiritual experiences detached from its epistolary context of God's eternal purpose in Christ.
Ephesians 3:3
King James Version (1769)
3 How that by revelation he made known unto me the mystery; (as I wrote afore in few words,
Ephesians 3:3 reveals that Paul received direct divine revelation from God concerning the mystery of the gospel, specifically the inclusion of Gentiles as co-heirs with Jews in Christ, which he had previously summarized briefly in his writings; this highlights the supernatural origin of apostolic doctrine, bypassing human instruction and emphasizing God's sovereign disclosure of His redemptive plan previously hidden but now manifested through Jesus.