This short treatise was written by the Byzantine monk, Nicetas, who disputes some points of Eucharistic theology which has become increasingly divergent from when he is writing in the 8th century. His biggest point of disputation is directly at the Latin church's use of unleavened bread as part of their liturgy, in contrast to the "living bread" more frequently utilized by the churches of the east. His work foreshadows the growing tension that was beginning to be exhibited between the sees of Rome and Constantinople in his own time

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