The Eucharist
Catholics believe that in the Mass, through the power of Christ’s words and the Holy Spirit, bread and wine become the true Body and Blood of Jesus Christ while retaining the appearances of bread and wine. This belief is not a later invention: it comes from Scripture and the faith of the earliest Christians.
What is the Eucharist?
The Eucharist is the sacrament in which Jesus Christ gives Himself to His Church under the appearances of bread and wine. After the consecration, Christ is present truly, really and substantially: Body, Blood, Soul and Divinity.
“Eucharist” comes from a Greek word connected with thanksgiving. The New Testament describes Jesus giving thanks over the bread and the cup, while the Church came to use Eucharist as a name for the sacrament He instituted at the Last Supper.
The Eucharist is also called Holy Communion, the Blessed Sacrament, the Lord’s Supper, the Breaking of Bread and the Holy Sacrifice of the Mass. Each name highlights part of the same mystery.
Why does the Eucharist matter?
The Eucharist brings us into communion with Christ: a deep union and relationship with Him. Communion also unites believers with one another as members of Christ’s Church.
The Eucharist:
- Gives spiritual nourishment and strengthens the life of grace
- Unites the faithful more closely to Christ
- Joins the Church to Christ’s one sacrifice
- Strengthens the unity of the Church
- Separates us from sin and strengthens charity
- Anticipates the heavenly banquet and the resurrection to come
The Second Vatican Council calls the Eucharist the “source and summit of the Christian life.” The other sacraments and the Church’s works are directed toward communion with Christ, who is present in the Eucharist.
The Eucharist in Scripture
The Bible does not normally use “the Eucharist” as the sacrament’s proper title, but its essential teaching is present throughout the New Testament.
The Last Supper
At the Last Supper, Jesus did not say that the bread merely represented His body. He identified what He gave to the Apostles:
“Take, eat; this is my body.”Matthew 26:26, NRSV-CE
“This is my blood of the covenant.”Matthew 26:28, NRSV-CE
Jesus commanded the Apostles to continue this action in remembrance of Him. In biblical worship, a memorial is not merely thinking about a past event. The saving event is proclaimed and made sacramentally present to the worshipping community.
Saint Paul
Saint Paul describes the consecrated cup and bread as a real participation in Christ:
“A sharing in the body of Christ.”1 Corinthians 10:16, NRSV-CE
Paul also warns that receiving unworthily makes a person answerable for the Lord’s Body and Blood. That warning would be difficult to explain if Communion were only an ordinary symbol.
Did Jesus mean it literally?
In John 6, Jesus first multiplies loaves, then teaches that He is the Bread of Life. The chapter moves from believing in Him to the startling language of eating His flesh and drinking His blood.
“My flesh is true food and my blood is true drink.”John 6:55, NRSV-CE
Some disciples found the teaching difficult and left. Jesus did not call them back to explain that He meant only a symbol. Catholics read John 6 together with the Last Supper and Saint Paul: Christ truly gives His Body and Blood as food and drink under sacramental signs.
This does not mean Catholics believe Communion involves the ordinary physical manner of eating human flesh. Christ is present sacramentally. The appearances and physical properties of bread and wine remain.
What is transubstantiation?
Transubstantiation is the Church’s term for the change of the whole substance of bread into the Body of Christ and the whole substance of wine into His Blood. The appearances of bread and wine remain.
| What changes | What remains |
|---|---|
| The underlying reality of what the bread and wine are | Their observable appearances, including taste, texture, colour and other physical properties |
The term does not attempt to explain the mechanism of a miracle. It protects what the Church believes happens: this is a true change, even though it cannot be detected by the senses.
What does the priest do?
At Mass, an ordained priest or bishop acts in the person of Christ and speaks Christ’s words of institution within the Eucharistic Prayer. The priest does not change the gifts by personal power. Christ acts through the ministry He entrusted to the Church, by the power of the Holy Spirit.
Is the Mass another sacrifice of Jesus?
No. Christ’s sacrifice on the Cross happened once and does not need to be repeated. The Mass does not crucify Jesus again.
The Eucharist is the sacramental memorial, or re-presentation, of that one sacrifice. The same Christ who offered Himself on Calvary is present; the manner of offering is sacramental and unbloody. The Church is joined to His perfect self-offering to the Father.
| Calvary | The Mass |
|---|---|
| Christ’s once-for-all historical sacrifice | That one sacrifice made sacramentally present |
| Christ offered Himself on the Cross | Christ is the same priest and victim, acting through ordained ministry |
The Mass is therefore both a sacrifice and a sacred meal. These are not competing ideas: the risen Christ gives the Church the Body and Blood offered for humanity.
What did the earliest Christians believe?
The Eucharist was central from the Church’s beginning. Acts describes Christians devoting themselves to the Apostles’ teaching, fellowship, the breaking of bread and prayers.
Around AD 155, Saint Justin Martyr described Sunday Christian worship to the Roman emperor. His account includes readings from Scripture, prayers, the kiss of peace, bread and wine mixed with water, thanksgiving led by the presider, the people’s “Amen,” Communion and assistance for those in need. The basic pattern is recognisable in the Mass today.
Justin also explained that Christians did not receive the Eucharistic food as ordinary bread and drink. This early testimony predates later medieval theological debates by more than a thousand years.
The technical term transubstantiation was developed later to describe the change precisely. A doctrine can be believed before the Church develops a specialised word for it, just as the word Trinity expresses biblical truth even though that exact theological title is not written in Scripture.
Who may receive Holy Communion?
Because Communion expresses both union with Christ and unity with the Catholic Church’s faith and sacramental life, it is not treated as ordinary hospitality.
A Catholic preparing to receive should ordinarily:
- Be baptised and properly initiated into Eucharistic Communion
- Believe what the Church teaches about the Eucharist
- Be in a state of grace, without conscious unconfessed mortal sin
- Observe the required Eucharistic fast, apart from the Church’s exceptions
- Approach reverently and receive according to the Church’s discipline
A person conscious of mortal sin should ordinarily receive sacramental absolution before Communion. Someone who is unsure about receiving should speak with the priest before Mass.
Why can’t everyone receive?
All people are welcome to attend Mass. Receiving Communion, however, publicly expresses full communion in Catholic faith, worship and governance. Someone who cannot receive may remain in place and pray for deeper union with Christ.
Why do Catholics adore the Eucharist?
Christ remains present as long as the consecrated appearances remain. For this reason, consecrated hosts not consumed at Mass are reserved in the tabernacle, especially so Communion can be taken to the sick and dying.
Because the Eucharist is truly Christ, Catholics worship Him in the Eucharist. Practices such as genuflecting, silent prayer before the tabernacle, Eucharistic exposition and Benediction are directed to Jesus—not to bread as bread.
The Mass remains the centre of Eucharistic worship. Adoration outside Mass extends the Church’s worship and helps believers grow in love for the Christ they receive in Communion.
Common questions
Is the Eucharist only a symbol?
The Eucharist uses visible signs and has symbolic meaning, but Catholic teaching says it is more than a symbol. Through consecration, Christ becomes truly and substantially present under those signs.
Does the bread still look and taste like bread?
Yes. Its appearances and physical properties remain. The change concerns what it truly is at the deepest level, which is why the change cannot be measured by the senses.
Is Jesus divided between different hosts?
No. Christ is present whole and entire in each consecrated species and in every part of them. Breaking the host does not divide Christ.
Why are bread and wine both used if Christ is wholly present in either?
Using both corresponds to the sign Christ instituted at the Last Supper. The Church teaches that the whole Christ is received under either species, so a communicant who receives only the host does not receive “less” of Christ.
What if someone doubts?
Doubt should be brought honestly to prayer, Scripture, study and conversation with a priest. A person should not pretend certainty, but should also distinguish a passing difficulty from a deliberate rejection of the Church’s teaching.
Can a priest consecrate anything?
No. The Church follows what Christ instituted: valid matter for the Eucharist is wheat bread and natural grape wine, and the sacrament must be celebrated by a validly ordained priest or bishop using the Church’s essential form and intention.
Faith Made Accessible
The Gratia Mission exists to make the Catholic faith more accessible through affordable Bibles, rosaries and other resources, while providing them free to those facing financial hardship.
As we grow, we hope to serve both body and soul by providing food, clean water and clothing, and by supporting churches and schools in underprivileged communities around the world.
Sources and Further Reading
This article was prepared using Scripture and official Catholic teaching. Brief Scripture quotations are from the New Revised Standard Version, Catholic Edition (NRSV-CE).
- Catechism of the Catholic Church: The Sacrament of the EucharistInstitution, Real Presence, sacrifice, Communion and Eucharistic worship (CCC 1322–1419).
- Ecclesia de EucharistiaSaint John Paul II on the Eucharist in the life of the Church.
- Sacrosanctum ConciliumThe Second Vatican Council’s Constitution on the Sacred Liturgy.
- Mysterium FideiPope Paul VI on Eucharistic doctrine and the Real Presence.
- The Eucharist: Communion with Christ and with One AnotherBiblical, theological and historical teaching prepared for the International Eucharistic Congress.
- The Catechism and the Eucharistic CelebrationDiscussion of Saint Justin Martyr’s early description of Christian Eucharistic worship.