This round window represents what should be close to our hearts since it is the center of our Faith. The whole Sixth Chapter of St. John's Gospel recounts Jesus' promise of the Holy Eucharist. So central is this Sacrement was very forceful in requiring our belief in the Real Presence. "Unless you eat My Flesh and drink My Blood you cannot have life in you." Seldom does Jesus speak so forcefully and use the word "UNLESS". It seemed most appropriate to have this stained glass window of the Chalice and Host over the Tabernacle in a most prominate place.