Ever since I discovered Nancy Drew, I have loved mysteries—even devouring the Hardy Boys books written for boys. The word “mystery” occurs several times in the book of Ephesians, referring to God’s recently revealed plan.
In 1:10, the mystery is the unification of everything in heaven and earth under Christ’s authority. Note the vertical axis in the diagram below.
In 3:6, the mystery is the reconciliation of Jews and Gentiles—again under Christ. Note the horizontal axis in the diagram.
Now with Christ in the center of both axes—it forms a cross! The only way to life and wholeness for a torn and alienated world is Christ and his death on the cross.