Catholic apologist Dave Armstrong has compiled his writing on the Eucharist & the Sacrifice of the Mass into a Scripture-packed 23 chapters and 222 pages. Among the topics covered are: 1) the special presence of God in physical objects in the OT, 2) comparison of the indwelling & the Real Presence, 3) doubting disciples in the eucharistic discourse of John 6, 4) exclusion of non-Catholics from Catholic communion, 5) St. Augustine's & John Calvin's views, 6) the Church fathers on the Sacrifice of the Mass, 7) St. Paul's "priestly" references, 8) biblical, analogical arguments for the Sacrifice of the Mass, 9) the Protestant "idolatry" accusation, and 10) biblical evidence for wholehearted formal, liturgical worship. The facts of Church history are also examined in depth, with much corroboration from Protestant scholarly sources. Armstrong's explanations help to make Catholic teachings on the Holy Eucharist & the Mass understandable, plausible, & easily harmonized with the teaching of the Bible.