In the book of Ephesians, Paul emphasized (as he always seemed to do) that the Gospel of Jesus Christ was not a new idea. Everything Jesus accomplished was part of God’s plan since “before the foundation of the world.” But there was one thing that was surprising about the Gospel, one thing that had been a secret or a “mystery” before, but now was revealed by the Gospel. What was that “mystery”? What had God’s people not expected the Messiah…