A sermon preached in the cathedral church of St. Paul, London: on Thursday, May 28, 1789 being the time of the yearly meeting of the children educated in the charity-schools, in and about the cities of London and Westminster. By the Right Reverend Father in God Samuel, Lord Bishop of St. Asaph. Published at the Request of the Society for promoting Christian Knowledge, And the Trustees of the several Schools. To which is annexed, An account of the Society for Promoting Christian Knowledge