In this deeply contemplative and meditative study, Father Kereszty first places the Eucharist in the universal context of world religions and shows how the Eucharist is God's response to the universal human quest for the perfect sacrifice of thanksgiving, expiation, and communion. Father Kereszty discusses not only the explicit eucharistic texts of the New Testament but demonstrates the role and meaning of the Eucharist within each Gospel, within the theology of Paul, the letter to the Hebrews, and the book of Revelation. He highlights forgotten texts and recovers surprising insights from the Fathers that show the link between the Eucharist and mystical experience, the presence of all the mysteries of Christ (in particular his death, Resurrection, and his coming in glory) in the eucharistic celebration. He then carries the lex orandilex credendi adage to its logical conclusion: the liturgical celebration provides the content and the organizing principle for the systematic presentation.