"God has now revealed to us his mysterious will regarding Christ—which is to fulfil his own good plan. And this is the plan: At the right time he will bring everything together under the authority of Christ—everything in heaven and on earth." - Eph. 1:9-10
One of the great mysteries as revealed in Ephesians 1, is the uniting of heaven and earth under the authority of King Jesus. Because Jesus has come bringing the Kingdom of God, heaven and earth have collided. As Christians, when we submit to rule and reign of Jesus, we play a part in the intersecting of heaven and earth.