The mystery “the gospel” was made known to Paul in order that he might proclaim it.
...to preach to the Gentiles the unsearchable riches of Christ, 9 and to make plain to everyone the administration of this mystery, which for ages past was kept hidden in
Paul, Gospel, Mystery, Proclaim, Great Commission, Unsearchable
The full wonder of God's glorious wisdom & power are utterly beyond human understanding. It staggers even the most mature Christian mind, including the mind of the apostle himself. God's wisdom is as inscrutable as it is unfathomable to mere humans. Here
Romans 11:33-36, Romans 11:36
Judgement, Wisdom, Greatness, All Things, Unfathomable, Unsearchable