When the Church uses the term, the “Paschal mystery,” she is referring to the mystery of Jesus’ passion, death, and resurrection. The word “paschal” comes from the Greek pascha , meaning Passover, so it is the “Passover mystery.” The Jewish Passover meal had its own rules and regulations. Today the meal is called the Passover Seder , from the Hebrew word for “order.” That order revolved around four cups of wine, all of which must be drunk. Jesus, however, did not do this that Thursday night at the Lord’s Supper , His final Passover on earth. The details are described in the book, Jesus and the Jewish Roots of the Eucharist , by Brant Pitre, Ph.D., Chapter 6 titled “The Fourth Cup and the Death of Jesus.” Below is a quick summary. From the descriptions in the New Testament of how Jesus celebrated that last Passover meal, which we now know of as the Last Supper, three of the four cups can be identified. But what Jesus does differently is that he does not drink the fourth cup....