Introduction to the Mass

Introduction to the Mass

For Catholics, the Holy Mass is not simply a church service or weekly gathering.

It is the highest act of worship that can be offered to God and the center of Christian life.

At every Mass, Heaven and Earth meet.

God speaks to His people through Sacred Scripture. Christ’s sacrifice on Calvary is made present sacramentally. The faithful unite themselves to Jesus Christ and receive Him in Holy Communion.

The Mass is where Catholics encounter Christ in a unique and profound way.

“Do this for a commemoration of me.” — Luke 22:19

What Is the Mass?

The Mass is the celebration of the Eucharist instituted by Jesus Christ at the Last Supper.

It is the Church’s highest form of worship and the source and summit of the Christian life.

Through the ministry of the priest and the power of the Holy Spirit, bread and wine become the Body, Blood, Soul, and Divinity of Jesus Christ.

At every Mass:

• God’s Word is proclaimed.
• Christ’s sacrifice is made present.
• The faithful worship God.
• The Eucharist is received.
• The Church is united as one body in Christ.

The same Jesus who died, rose from the dead, and reigns in Heaven is truly present in every Mass.

The Mass in Sacred Scripture

The Mass did not appear centuries after Christ. Its roots are found throughout Sacred Scripture.

The Last Supper

On the night before His Passion, Jesus gathered with His Apostles for the Last Supper.

“This is my body, which is given for you. Do this for a commemoration of me.” — Luke 22:19

“This is the chalice, the new testament in my blood.” — Luke 22:20

At that moment, Christ instituted the Eucharist and commanded His Apostles to continue this sacred memorial.

The Bread of Life Discourse

In John chapter 6, Jesus taught:

“For my flesh is meat indeed: and my blood is drink indeed.” — John 6:56

Many disciples found this teaching difficult and left Him. Yet Jesus did not withdraw His words.

The Early Church

The first Christians faithfully continued the Eucharistic worship established by Christ.

The Acts of the Apostles describes believers gathering for prayer, teaching, fellowship, and the breaking of bread.

The Mass and the Sacrifice of Calvary

One of the most misunderstood aspects of Catholic teaching is the relationship between the Mass and Christ’s sacrifice on the Cross.

The Church does not teach that Jesus is sacrificed again.

Christ died once for all. His sacrifice can never be repeated.

Instead, the Mass makes present the one sacrifice of Calvary.

The same sacrifice offered on the Cross is made present sacramentally upon the altar.

• One Savior.
• One Cross.
• One Sacrifice.

The Mass allows believers of every age and place to participate in that one eternal sacrifice.

The Mass Is Both Sacrifice and Sacred Meal

A Sacrifice

The Mass is the sacramental re-presentation of Christ’s sacrifice.

Catholics unite their prayers, sufferings, works, and sacrifices with Christ’s perfect offering to the Father.

A Sacred Banquet

The Mass is also a sacred meal.

After offering the sacrifice, the faithful receive the Eucharist.

Just as God fed His people with manna in the wilderness, Christ feeds His Church with His own Body and Blood.

The Real Presence of Jesus Christ

Catholics believe that Jesus is truly present in the Eucharist.

This presence is not merely symbolic.

Through the consecration at Mass:

• Bread becomes Christ’s Body.
• Wine becomes Christ’s Blood.

Although the appearances of bread and wine remain, their substance is changed by God’s power.

This change is called Transubstantiation.

Because Christ is truly present, Catholics show profound reverence toward the Eucharist.

The Eucharist is not simply a thing. It is a Person. It is Jesus Christ Himself.

Why Catholics Attend Mass

Catholics attend Mass because Christ invites His people to worship God and receive His grace.

Mass is not primarily about personal feelings, entertainment, or preference. It is about worship.

Through the Mass we:

• Worship God.
• Thank God for His blessings.
• Hear God’s Word.
• Receive spiritual nourishment.
• Unite ourselves to Christ’s sacrifice.
• Grow in holiness.
• Receive the Eucharist.

Sunday Mass is therefore not merely a tradition but an essential part of Christian life.

The Mass in the Early Church

The Mass has been celebrated since the earliest days of Christianity.

Early Christian writings describe worship that closely resembles the Mass celebrated today.

Saint Justin Martyr, writing around AD 155, described Scripture readings, a homily, prayers, the offering of bread and wine, Eucharistic prayers, and Holy Communion.

These elements remain part of the Mass nearly two thousand years later.

The Church’s worship has developed organically through the centuries while preserving its essential structure.

The Mass and Heaven

The Mass is not only an earthly event.

The Book of Apocalypse describes heavenly worship before the throne of God.

Angels praise God continually. The saints worship the Lamb. The heavenly liturgy never ceases.

When Catholics participate in the Mass, they join their worship to:

• The angels.
• The saints.
• The Blessed Virgin Mary.
• The entire Church in Heaven.

The Mass unites Heaven and Earth in the worship of Almighty God.

A Journey Through the Mass

In the pages that follow, we will explore each major section of the Mass:

The more we understand the Mass, the more fully we can participate in it.

Key Truths About the Mass

• Jesus instituted the Mass at the Last Supper.
• The Mass is the source and summit of the Christian life.
• The Eucharist is truly the Body and Blood of Christ.
• The Mass makes present Christ’s one sacrifice on Calvary.
• The Mass is both a sacrifice and a sacred banquet.
• Catholics worship alongside the angels and saints at every Mass.
• The Mass has been celebrated since the earliest days of Christianity.
• Holy Communion unites believers with Jesus Christ.

What Does This Mean For Me?

The Mass is not something we merely watch. It is something we enter into.

At every Mass, Jesus Christ invites us to listen to His Word, unite ourselves to His sacrifice, and receive Him in the Eucharist.

Whether you are attending Mass for the first time or have attended for many years, there is always more to discover.

The Mass is the heart of Catholic life because it is where we meet Christ Himself.

The more deeply we understand the Mass, the more deeply we can know, love, and follow Jesus Christ.