The free prayer of the common devotion should be the prayer of the fellowship and not that of the individual who is praying. It is his responsibility to pray for the fellowship. So he will have to share the daily life of the fellowship; he must know the cares, the needs, the joys and thanksgivings, the petitions and hopes of the others. Their work and everything they bring with them must not be unknown to him. He pray as a brother among brothers.
Life Together- Saying our prayers togetherp.63 Deitrich Bonhoeffer