Sacrament of the Eucharist

Jesus gives himself to us in the Eucharist as spiritual nourishment because he loves us. God's whole plan for our salvation is directed to our participation in the life of the Trinity, the communion of Father, Son, and Holy Spirit. Our sharing in this life begins with our Baptism, when by the power of the Holy Spirit we are joined to Christ, thus becoming adopted sons and daughters of the Father. It is strengthened and increased in Confirmation. It is nourished and deepened through our participation in the Eucharist. By eating the Body and drinking the Blood of Christ in the Eucharist we become united to the person of Christ through his humanity. "Whoever eats my flesh and drinks my blood remains in me and I in him" (Jn 6:56). In being united to the humanity of Christ we are at the same time united to his divinity. Our mortal and corruptible natures are transformed by being joined to the source of life. "Just as the living Father sent me and I have life because of the Father, so also the one who feeds on me will have life because of me" (Jn 6:57). By being united to Christ through the power of the Holy Spirit dwelling in us, we are drawn up into the eternal relationship of love among the Father, the Son, and the Holy Spirit. As Jesus is the eternal Son of God by nature, so we become sons and daughters of God by adoption through the sacrament of Baptism. Through the sacraments of Baptism and Confirmation (Chrismation), we are temples of the Holy Spirit, who dwells in us, and by his indwelling we are made holy by the gift of sanctifying grace. The ultimate promise of the Gospel is that we will share in the life of the Holy Trinity. The Fathers of the Church called this participation in the divine life "divinization" ( theosis). In this we see that God does not merely send us good things from on high; instead, we are brought up into the inner life of God, the communion among the Father, the Son, and the Holy Spirit. In the celebration of the Eucharist (which means "thanksgiving") we give praise and glory to God for this sublime gift.

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).

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.

If someone without faith eats and drinks the consecrated bread and wine, does he or she still receive the Body and Blood of Christ?

If "to receive" means "to consume," the answer is yes, for what the person consumes is the Body and Blood of Christ. If "to receive" means "to accept the Body and Blood of Christ knowingly and willingly as what they are, so as to obtain the spiritual benefit," then the answer is no. A lack of faith on the part of the person eating and drinking the Body and Blood of Christ cannot change what these are, but it does prevent the person from obtaining the spiritual benefit, which is communion with Christ. Such reception of Christ's Body and Blood would be in vain and, if done knowingly, would be sacrilegious (1 Cor 11:29). Reception of the Blessed Sacrament is not an automatic remedy. If we do not desire communion with Christ, God does not force this upon us. Rather, we must by faith accept God's offer of communion in Christ and in the Holy Spirit, and cooperate with God's grace in order to have our hearts and minds transformed and our faith and love of God increased.

If a believer who is conscious of having committed a mortal sin eats and drinks the consecrated bread and wine, does he or she still receive the Body and Blood of Christ?

Yes. The attitude or disposition of the recipient cannot change what the consecrated bread and wine are. The question here is thus not primarily about the nature of the Real Presence, but about how sin affects the relationship between an individual and the Lord. Before one steps forward to receive the Body and Blood of Christ in Holy Communion, one needs to be in a right relationship with the Lord and his Mystical Body, the Church - that is, in a state of grace, free of all mortal sin. While sin damages, and can even destroy, that relationship, the sacrament of Penance can restore it. St. Paul tells us that "whoever eats the bread or drinks the cup of the Lord unworthily will have to answer for the body and blood of the Lord. A person should examine himself, and so eat the bread and drink the cup" (1 Cor 11:27-28). Anyone who is conscious of having committed a mortal sin should be reconciled through the sacrament of Penance before receiving the Body and Blood of Christ, unless a grave reason exists for doing so and there is no opportunity for confession. In this case, the person is to be mindful of the obligation to make an act of perfect contrition, that is, an act of sorrow for sins that "arises from a love by which God is loved above all else" ( Catechism, no. 1452). The act of perfect contrition must be accompanied by the firm intention of making a sacramental confession as soon as possible.

Yes. Christ is present during the Eucharist in various ways. He is present in the person of the priest who offers the sacrifice of the Mass. According to the Constitution on the Sacred Liturgy of the Second Vatican Council, Christ is present in his Word "since it is he himself who speaks when the holy scriptures are read in the Church." He is also present in the assembled people as they pray and sing, "for he has promised ‘where two or three are gathered together in my name there am I in the midst of them' (Mt 18:20)" ( Sacrosanctum Concilium, no. 7). Furthermore, he is likewise present in other sacraments; for example, "when anybody baptizes it is really Christ himself who baptizes" (ibid.). We speak of the presence of Christ under the appearances of bread and wine as "real" in order to emphasize the special nature of that presence. What appears to be bread and wine is in its very substance the Body and Blood of Christ. The entire Christ is present, God and man, body and blood, soul and divinity. While the other ways in which Christ is present in the celebration of the Eucharist are certainly not unreal, this way surpasses the others. "This presence is called ‘real' not to exclude the idea that the others are ‘real' too, but rather to indicate presence par excellence, because it is substantial and through it Christ becomes present whole and entire, God and man" ( Mysterium Fidei, no. 39).

By his Real Presence in the Eucharist Christ fulfils his promise to be with us "always, until the end of the age" (Mt 28:20). As St. Thomas Aquinas wrote, "It is the law of friendship that friends should live together.

Order your copy of "The Real Presence of Jesus Christ in the Sacrament of the Eucharist: Basic Questions and Answers"  please visit https://store.usccb.org or contact USCCB Communications at 1-800-235-8722. Pub. no. 5-434, 20-page booklet.