Hahn, a Protestant minister who converted to Roman Catholicism, has written extensively about the Catholic faith in previous books (A Father Who Keeps His Promises, not reviewed, etc.). Here he examines the relationship between the Divine Liturgy and the Book of Revelation. Attending his first Mass, Hahn was struck by the word used to describe Jesus: lamb. Not the majestic, awe-inspiring language we usually reserve for God. But the Book of Revelation calls Jesus lamb, too, 28 times in 22 chapters. This was Hahn’s first inkling that the key to understanding the Mass was Revelation, and the key to understanding Revelation was the Mass. His was not a new insight, but if Christians in the know have long understood the connections between Revelation and the Mass, most average church-goers would cock an eyebrow quizzically at the suggestion that the last book of the Bible has anything to do with bread and wine. Hahn’s exploration of the connections between them is marred by superficiality, exemplified, but not limited to, a penchant for peppering the text with cute, near-pun subheadings, such as “Well Bread” and “Moriah Carry.” Still, if taken in the (light) spirit in which it is offered, this is worthwhile addition to one’s eucharistic library.