Paul refers to a mystery that was made known to him through divine revelation. This mystery, which he has mentioned before, is the inclusion of the Gentiles in the promise of Christ. At the time, this was a radical concept, as the Jewish people were traditionally seen as God's chosen ones. By revealing this mystery, Paul highlights the expansive and inclusive nature of God's love and salvation. This revelation was not something Paul discovered on his own; it was given to him by God, showing that divine wisdom often surpasses human understanding.
The passage encourages believers to be open to God's revelations, which may come in unexpected ways or challenge preconceived notions. It also serves as a reminder that God's plan is inclusive, reaching out to all people, regardless of their background. This inclusivity is a cornerstone of the Christian faith, emphasizing unity and the breaking down of barriers that divide humanity. Believers are invited to embrace this mystery and participate in God's unfolding plan with faith and trust.