
I know that the answer to the question "For whom did the theologians hope to establish doctrinal unity?" is in "In October 1529, Philip I, Landgrave of Hesse, convoked an assembly of German and Swiss theologians at the Marburg Colloquy, to establish doctrinal unity in the emerging Protestant states. Agreement was achieved on fourteen points out of fifteen, the exception being the nature of the Eucharist – the sacrament of the Lord's Supper—an issue crucial to Luther.". Can you tell me what it is? 


emerging Protestant states
