3. When the bread and wine become the Body and Blood of Christ, why do they still look and taste like bread and wine?
In the celebration of the Eucharist, the glorified Christ becomes present under the appearances of bread and wine in a way that is unique, a way that is uniquely suited to the Eucharist. In the Church's traditional theological language, in the act of consecration during the Eucharist the "substance" of the bread and wine is changed by the power of the Holy Spirit into the "substance" of the Body and Blood of Jesus Christ. At the same time, the "accidents" or appearances of bread and wine remain. "Substance" and "accident" are here used as philosophical terms that have been adapted by great medieval theologians such as St. Thomas Aquinas in their efforts to understand and explain the faith. Such terms are used to convey the fact that what appears to be bread and wine in every way (at the level of "accidents" or physical attributes - that is, what can be seen, touched, tasted, or measured) in fact is now the Body and Blood of Christ (at the level of "substance" or deepest reality). This change at the level of substance from bread and wine into the Body and Blood of Christ is called "transubstantiation." According to Catholic faith, we can speak of the Real Presence of Christ in the Eucharist because this transubstantiation has occurred (cf. Catechism, no. 1376). This is a great mystery of our faith—we can only know it from Christ's teaching given us in the Scriptures and in the Tradition of the Church. Every other change that occurs in the world involves a change in accidents or characteristics. Sometimes the accidents change while the substance remains the same. For example, when a child reaches adulthood, the characteristics of the human person change in many ways, but the adult remains the same person—the same substance. At other times, the substance and the accidents both change. For example, when a person eats an apple, the apple is incorporated into the body of that person—is changed into the body of that person. When this change of substance occurs, however, the accidents or characteristics of the apple do not remain. As the apple is changed into the body of the person, it takes on the accidents or characteristics of the body of that person. Christ's presence in the Eucharist is unique in that, even though the consecrated bread and wine truly are in substance the Body and Blood of Christ, they have none of the accidents or characteristics of a human body, but only those of bread and wine.
4. Does the bread cease to be bread and the wine cease to be wine?
Yes. In order for the whole Christ to be present—body, blood, soul, and divinity—the bread and wine cannot remain, but must give way so that his glorified Body and Blood may be present. Thus, in the Eucharist the bread ceases to be bread in substance, and becomes the Body of Christ, while the wine ceases to be wine in substance, and becomes the Blood of Christ. As St. Thomas Aquinas observed, Christ is not quoted as saying, " This bread is my body," but " This is my body" (Summa Theologiae, III q. 78, a. 5).
5. Is it fitting that Christ's Body and Blood become present in the Eucharist under the appearances of bread and wine?
Yes, for this way of being present corresponds perfectly to the sacramental celebration of the Eucharist. Jesus Christ gives himself to us in a form that employs the symbolism inherent in eating bread and drinking wine. Furthermore, being present under the appearances of bread and wine, Christ gives himself to us in a form that is appropriate for human eating and drinking. Also, this kind of presence corresponds to the virtue of faith, for the presence of the Body and Blood of Christ cannot be detected or discerned by any way other than faith. That is why St. Bonaventure affirmed: "There is no difficulty over Christ's being present in the sacrament as in a sign; the great difficulty is in the fact that He is really in the sacrament, as He is in heaven. And so believing this is especially meritorious." (In IV Sent., dist. X, P. I, art. un., qu. I). On the authority of God who reveals himself to us, by faith we believe that which cannot be grasped by our human faculties (cf. Catechism, no. 1381).
Fr. Antonius David Tristianto, O.Carm.
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