Lutheranism has solved the cultural problem. Its doctrine of the two kingdoms is this: the kingdom of heaven and the kingdom of the world are two distinct spheres that must not be confused with each other. But Christians are citizens of both realms, and God is king of them both, though ruling each in different ways. The secular realm, in all of its secularity, belongs to God, who rules it with His providential care, His created order, and His Law. The spiritual realm is also God’s, and He governs it with His Word, His redemption, and His Gospel.
