The root and ground of Christian ethics, the author says, is the reality of God as revealed in Jesus Christ. This reality is not manifest in the Church as distinct from the secular world; such a juxtaposition of two separate spheres, Bonhoeffer insists, is a denial of God's having reconciled the whole world to himself in Christ. On the contrary, God's commandment is to be found and known in the Church, the family, labor, and government. His commandment permits man to live as man before God, in a world God made, with responsibility for the institutions of that world.