Ephesians 3:3-5

3:3 that by revelation the divine secret was made known to me, as I wrote before briefly. 3:4 When reading this, you will be able to understand my insight into this secret of Christ. 3:5 Now this secret was not disclosed to people in former generations as it has now been revealed to his holy apostles and prophets by the Spirit,

Ephesians 3:9

3:9 and to enlighten everyone about God’s secret plan – a secret that has been hidden for ages in God who has created all things.

Ephesians 3:11

3:11 This was according to the eternal purpose that he accomplished in Christ Jesus our Lord,