Romans 16:25
Doxology
25 bNow to him who is able to strengthen you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery that was kept csecret for long ages
1 Corinthians 2:7
7 But we impart a csecret and hidden wisdom of God, which God ddecreed before the ages for our glory.
Ephesians 3:9
9 and pto bring to light for everyone what is the plan of the mystery qhidden for ages in1 God, who created all things,