In this critical analysis Enrico Mazza concentrates on structure as he traces the evolution of the Eucharistic Prayer from its origins in the ancient Jewish rites and its Christian beginnings in the Didache. He then examines the paleoanaphoras of the early centuries and moves through the origin and progressive development of the larger anaphoric families (Alexandrian, Roman, Antiochene), showing the influence of the Jewish rites on the formation of the Christian texts, and arriving finally at the classical anaphoras of the fourth century.