What is a Catholic Mass

Mass is the central act of worship in the life of a Catholic. Going to Mass is about spending time with God, but also receiving his graces (inner strength to live the Christian life). The name 'Mass' comes from the final blessing said by the priest in Latin ‘Ite missa es’ meaning “to send out” as Jesus Christ sent his disciples out to the world to take his teaching to them.

The Mass has four basic parts or ‘rites’. The beginning is called the ‘Introductory Rite’. At the beginning, the priest processes in, accompanied by altar servers, (usually boys and girls who help the priest by carrying things, giving him things). Often the congregation (all those who are there) sing a hymn. Once the priest reaches the sanctuary (the part of the Church where the altar table is) he begins Mass by saying the sign of the cross; ‘In the name of the Father, and of the Son and of the Holy Spirit, Amen.’ This short prayer means that everyone is reminded that they are baptised into the One God in three persons, and so puts themselves into his protection. Then the congregation are given a few moments to reflect upon the things they have done or not done which hurt other people, and are invited to repent, or say sorry to God. This is because not being sorry for sins (when we have hurt other people or disobeyed God,) can be a barrier to being given the graces God wants to give us.

The second part of Mass is called the ‘Liturgy of the Word.’ Liturgy is an ancient word, which came from the ancient Greeks meaning ‘official work,’ so Mass is part of the official prayer of the Church. In the liturgy of the Word, everyone listens to readings from the Bible; first, a story from the Old Testament which is completed by what Jesus Christ did, e.g. the story of the Israelites being fed on manna in the desert (Exodus chapter 16), is completed when Jesus Christ said ‘I am the bread of life’ (John chapter 6). Then a psalm is prayed or sung on the same theme. The second reading is usually a letter from St Paul and then everyone stands to listen to a reading from the Gospel, the story of Jesus. This reading will show how the Old Testament is completed by Jesus. After the readings everyone sits and listens to the homily, or sermon preached by the priest. To complete this part of the Mass, on Sundays, everyone recites the Creed, which is the statement of faith in God, and then each parish has its own set of ‘intercessions’ that is, a set of prayers for local issues and people.

The third part of the Mass is called the liturgy of the Eucharist. ‘Eucharist’ means to give thanks, so it begins by the ‘offertory’ when we offer ourselves to God. This is symbolised by taking up the bread and wine which will become the Body and Blood of Jesus Christ, and the collection. During the Eucharistic prayer everyone kneels as to worship Jesus Christ who becomes present under the appearance of bread and wine when the priest says the ‘consecration’. The change is not ‘done’ by the priest, but by Christ, and whilst visible, nothing appears to have changed, the change is one of substance, of what it is. Those who are able to receive ‘Holy Communion’ then process up to receive, either in one kind (just the host, the Body) or in two kinds (from the cup as well). Those unable to receive Holy Communion, either because they are not Catholics, or because as Catholics they have disobeyed a serious law of the Church and have not been reconciled to the Church, are invited to come forward and receive a blessing, which can be called a spiritual communion.

The final part of Mass, the concluding rite is quite short – after some time to reflect on the Eucharist (Holy Communion) everyone stands and the priest says a final short prayer, asking God for help to use the graces we have received in Mass to help us in our daily lives. He then blesses everyone in the name of the Father and the Son and the Holy Spirit, so we all leave knowing we have worshipped the Triune God, and strengthened by him to live our lives in the world. To the priest’s final words, ‘The Mass is ended. Go in the peace of Christ, to love and serve the Lord’ the congregation reply ‘Thanks be to God.’

Much has been written on the central mystery of the Eucharist and St. Cyril of Jerusalem writing in the late fourth century said, ‘Do not look upon the bread and wine as something ordinary, for, by the Lord’s own words, they are his Body and Blood. Even though perception suggests this to you, let faith grant you certainty. Do not judge the matter by taste! Be firmly convinced by faith that you have become worthy of the Body and Blood of Christ’ (Mystagogical Catecheses 4, 6).

To Pray

Prayer before Mass:

Almighty and ever-living God, I approach the sacrament of Your only-begotten Son Our Lord Jesus Christ, I come sick to the doctor of life, unclean to the fountain of mercy, blind to the radiance of eternal light, and poor and needy to the Lord of heaven and earth.

Lord, in your great generosity, heal my sickness, wash away my defilement, enlighten my blindness, enrich my poverty, and clothe my nakedness. May I receive the bread of angels, the King of kings and Lord of lords, with humble reverence, with the purity and faith, the repentance and love, and the determined purpose that will help to bring me to salvation. May I receive the sacrament of the Lord's Body and Blood, and its reality and power.

Kind God, may I receive the Body of Your only-begotten Son, our Lord Jesus Christ, born from the womb of the Virgin Mary,
and so be received into His mystical body  and numbered among His members.

Loving Father, as on my earthly pilgrimage I now receive Your beloved Son under the veil of a sacrament, may I one day see him face to face in glory, who lives and reigns with You for ever.

- Saint Thomas Aquinas

Thanksgiving after Mass

Lord, Father all-powerfull and ever living God, I thank You, for even though I am a sinner, your unprofitable servant, not because of my worth but in the kindness of your mercy, You have fed me with the Precious Body & Blood of Your Son, our Lord Jesus Christ. 

I pray that this Holy Communion may not bring me condemnation and punishment but forgiveness and salvation. 
May it be a helmet of faith and a shield of good will.  May it purify me from evil ways and put an end to my evil passions. May it bring me charity and patience, humility and obedience, and growth in the power to do good. 
May it be my strong defense against all my enemies, visible and invisible, and the perfect calming of all my evil impulses, bodily and spiritual. May it unite me more closely to you, the One true God, and lead me safely through death to everlasting happiness with You. And I pray that You will lead me, a sinner, to the banquet where you, with Your Son and holy Spirit, are true and perfect light, total fulfillment, everlasting joy, gladness without end, and erfect
happiness to your saints. grant this through Christ our Lord,


To Read

Outline of the Mass described by St. Justin Martyr, writing in about 150 AD in the Catechism of the Catholic Church 1345

What to do at Mass - Busted Halo

To Watch

Sacraments 201 - Eucharist

To Do

As well as attending Mass weekly and receiving Jesus in Holy Communion, Catholics also adore the Lord in the Blessed Sacrament.  Catholics believe that the Lord is really present in the Blessed Sacrament under the appearance of bread and wine.

This article was written by a member of the catechetical team at the Maryvale Institute working in partnership with the Home Mission Desk of the Catholic Bishops’ Conference of England and Wales.