St. Cyril of Jerusalem expounds during his catechetical lectures (c. 347 AD) on the Eucharist, and also on the liturgy, which almost identically matches the order and substance of the liturgy as is in effect today in the Coptic Orthodox Church. This book provides St. Cyril’s lectures laid out in three segments: Chapter 1 provides St. Cyril’s teachings that can be applied to how one should ready themselves for partaking of the Eucharist. Chapter 2 delves into the mystery of the body and the blood of Christ. Chapter 3, the lengthiest portion of the book, not only provides St. Cyril’s lectures as he walks through the liturgy step, by step, but also alongside those lectures you will find the relevant Coptic Church’s liturgical prayers used most commonly today, and accompanying editorial explanations that draw the connection between what St. Cyril taught nearly seventeen centuries ago and what is practiced in modern times.