Bonhoeffer on the Praxis of Churches

The church is only the church when it exists for others. To make a start, it should give away all its property to those in need. The clergy must live solely on the free-will offerings of their congregations, or possibly engage in some secular calling. The church must share in the secular problems of ordinary human life, not dominating, but helping and serving. It must tell men (sic) of every calling what it means to live in Christ, to exist for others (Letters and Papers from Prison).