'Mystery' in the Bible

He made known to us the mystery of His will, according to His good pleasure that He planned in Him

The mystery was made known to me by revelation, as I have briefly written above.

By reading this you are able to understand my insight about the mystery of the Messiah.

and to shed light for all about the administration of the mystery hidden for ages in God who created all things.

This mystery is profound, but I am talking about Christ and the church.

Pray also for me, that the message may be given to me when I open my mouth to make known with boldness the mystery of the gospel.