In the world God wills work, marriage, government, and church, and God wills all these, each in its own way, through Christ, toward Christ, and in Christ. God has placed human beings under all these mandates, not only each individual under one or the other, but all people under all four. There can be no retreat, therefore, from a "worldly" into a "spiritual" "realm." The practice of the Christian life can be learned only under these four mandates of God.
- Dietrich Bonhoeffer