JOHN 20:30–31, THE PURPOSE OF THE GOSPEL
WRITTEN SO THAT WE MAY BELIEVE AND HAVE LIFE
Introduction
These verses form the original conclusion of John’s Gospel and clearly state why the Evangelist wrote. After presenting Jesus’ signs, teachings, Passion, Resurrection, and appearances, John invites the reader to make a decision. The Gospel is not merely a historical record or collection of inspiring stories. It is a testimony intended to awaken faith, deepen existing faith, and lead believers into eternal life.
John acknowledges that he has not recorded everything Jesus said and did. Guided by the Holy Spirit, he selected particular signs that reveal Jesus as the Messiah and the Son of God. The reader is invited to move from reading to believing, and from believing to living in communion with Christ.
Bible Passage (John 20:30–31)
Now Jesus did many other signs in the presence of his disciples that are not written in this book. But these are written that you may come to believe that Jesus is the Messiah, the Son of God, and that through this belief you may have life in his name.
Background
John’s Gospel is structured around carefully chosen signs. These include changing water into wine, healing the royal official’s son, restoring the paralytic, multiplying the loaves, walking on water, giving sight to the man born blind, and raising Lazarus. Each sign points beyond the miraculous event to the identity and mission of Jesus.
The Resurrection is the supreme confirmation of what these signs reveal. Jesus is not merely a wonder-worker, prophet, or moral teacher. He is the Messiah sent by the Father and the divine Son through whom eternal life is given.
There is a minor manuscript difference in verse 31. Some ancient manuscripts read “that you may come to believe,” suggesting an invitation to those who do not yet believe. Others read “that you may continue to believe,” addressing Christians whose faith needs strengthening. Both meanings express the continuing mission of the Gospel: to bring people to faith and to help believers persevere.
Opening Life Connection
Books are written for many purposes: to inform, entertain, persuade, teach, or preserve memories. John states that his Gospel has a greater purpose—to lead us into life-giving faith.
It is possible to know many facts about Jesus without personally entrusting ourselves to him. We may admire his teaching, study his history, celebrate Christian feasts, and participate in religious customs while still keeping control of our lives. John invites us to move beyond information about Christ into communion with Christ.
The Gospel ultimately asks every reader: Who is Jesus to me, and how does my answer change the way I live?
Verse-by-Verse / Phrase-by-Phrase Reflection
John begins, Jesus did many other signs. The written Gospel does not contain everything Jesus said and accomplished. John openly acknowledges that his account is selective. The life and mystery of Christ are greater than any book could completely describe.
This teaches us humility. God’s saving work cannot be reduced to the limits of human words. Yet what has been written gives us true and sufficient testimony for faith.
John calls Jesus’ works signs rather than merely miracles. A miracle awakens wonder, but a sign points beyond itself to a deeper reality. The signs are not performed merely to astonish crowds or display supernatural power. They reveal who Jesus is.
At Cana, Jesus reveals that he brings the new covenant and messianic abundance. In multiplying the loaves, he reveals himself as the Bread of Life. In healing the blind man, he reveals himself as the Light of the World. In raising Lazarus, he reveals himself as the Resurrection and the Life.
The proper response to a sign is not merely amazement but faith. Those who focus only on the extraordinary event may miss the person to whom it points.
The signs took place in the presence of his disciples. Christian faith rests upon testimony. The disciples witnessed Jesus’ words, works, death, empty tomb, and risen presence. They did not invent a philosophical system; they proclaimed someone whom they had encountered.
Later believers do not see Jesus in the same physical manner, but they receive the testimony of those who did. The apostolic witness connects every generation of Christians with the historical Jesus.
John then explains that many signs are not written in this book. Scripture is selective, but it is not deficient. The Evangelist, guided by the Holy Spirit, chose those events best suited to reveal Jesus’ identity and lead readers to faith.
The statement also reminds us that the Christian faith was transmitted within the living apostolic community before the New Testament writings were completed. The Church received the apostles’ preaching, worship, sacramental life, and teaching. Sacred Scripture and Sacred Tradition therefore belong together within the one deposit of faith.
John declares, These are written. The eyewitnesses would eventually die, but their inspired testimony would remain. Through the written Gospel, later generations can hear the words of Jesus, contemplate his signs, stand beneath his cross, discover the empty tomb, and encounter the risen Lord.
The written Word becomes a meeting place between Christ and the reader. Scripture is not simply a record of what God once did; through the Holy Spirit, it addresses the Church today.
John states his first purpose: that you may come to believe. Faith is not produced by force. The Gospel presents testimony, reveals signs, and invites a free response.
To believe in John’s Gospel means more than agreeing that certain claims are true. It means trusting Jesus, receiving him, remaining in him, and allowing his words to shape one’s life. Faith is personal commitment and communion.
The alternative manuscript reading, “that you may continue to believe,” reminds us that faith must be nourished. A person may sincerely believe and still experience temptation, suffering, doubt, or spiritual fatigue. The Gospel strengthens believers by bringing them repeatedly back to Christ.
John identifies Jesus first as the Messiah. The title means the Anointed One. Israel awaited the one through whom God would fulfill his promises, establish his reign, and bring salvation.
Jesus fulfills these hopes, but he does so in an unexpected way. His kingship is revealed through service, his glory through the cross, and his victory through self-giving love. He is not merely a political liberator but the Savior who conquers sin and death.
John then identifies him as the Son of God. This title expresses more than a special mission or close relationship with God. Throughout the Gospel, Jesus reveals his unique unity with the Father. He existed before Abraham, shares the Father’s works, gives eternal life, receives worship, and is confessed by Thomas as “My Lord and my God” (Jn 20:28).
The Gospel began by declaring, “The Word was God” (Jn 1:1). It now concludes by inviting the reader to believe that this eternal Word became flesh in Jesus Christ.
John’s second purpose is that through this belief you may have life. Faith is not an end in itself. It opens the believer to divine life.
John often describes eternal life as a present reality as well as a future hope. It begins now through knowing the Father and the Son, receiving the Holy Spirit, remaining in Christ, and living in love. Its fullness will be revealed in resurrection and everlasting communion with God.
This life is received in his name. In biblical thought, a name expresses identity, authority, and presence. To have life in Jesus’ name is to receive life through the person and saving power of Jesus.
Salvation is not achieved through human effort alone. It is a gift received through union with Christ. His name is not a magical formula but the revelation of the One in whom God’s saving presence is given to the world.
Jewish Historical and Religious Context
The title “Messiah” comes from the Hebrew word meaning “anointed one.” Kings, priests, and occasionally prophets were anointed for their missions. By the time of Jesus, many Jewish people hoped for a divinely appointed deliverer who would restore Israel.
John presents Jesus as fulfilling these hopes while surpassing political expectations. He is the king whose throne is the cross and whose kingdom offers eternal life.
The language of “signs” also has deep biblical roots. God gave signs through Moses during the Exodus to reveal divine authority and accomplish liberation. Jesus performs signs that announce a greater Exodus—the liberation of humanity from sin and death.
The concept of life is rooted in the Old Testament conviction that God alone is the source of life. By declaring that life is given in Jesus’ name, John identifies Jesus with the saving action and divine authority of God.
Catholic Tradition and Teaching
The Church teaches that the Gospels faithfully hand on what Jesus Christ did and taught for humanity’s eternal salvation. The Evangelists selected, synthesized, and explained material according to the needs of their communities while always communicating the truth about Jesus (Dei Verbum, 19; CCC 126).
John’s statement about events not included in his book also helps us understand the relationship between Scripture and Tradition. The fullness of apostolic faith was transmitted through both the inspired writings and the living Tradition of the Church (Dei Verbum, 9).
Faith is both a gift of grace and a free human response. The Holy Spirit prepares the heart, while the person freely assents to God’s revelation. Authentic faith includes trust, obedience, worship, and participation in the life of the Church.
The life promised through faith begins in Baptism, is nourished through the Eucharist, restored through Reconciliation, and directed toward eternal communion with God.
Historical or Saintly Illustration
Saint Augustine searched for truth through philosophy, ambition, and intellectual achievement. Scripture initially appeared unimpressive to him, but through prayer, preaching, and the patient witness of others, the Word of God penetrated his heart.
When Augustine finally surrendered to Christ, biblical truth became life-giving rather than merely informative. His conversion illustrates the purpose John describes: the Word is written not simply to increase knowledge but to awaken faith and transform life.
Application to Christian Life Today
This passage challenges us to examine how we read Scripture. Do we approach the Gospel merely for information, sermon material, or intellectual interest? Or do we allow it to lead us into deeper faith and conversion?
Every Gospel passage invites a response. When Jesus forgives, we are called to receive mercy and forgive others. When he serves, we are called to serve. When he speaks truth, we must allow that truth to correct us. When he gives his life, we are called to offer ours.
The passage also encourages those whose faith feels weak. We must continue returning to the Gospel. Faith grows through hearing God’s Word, prayer, participation in the sacraments, and obedience to what Christ teaches.
Finally, we are called to share the testimony we have received. John wrote so that others might believe. Our words, choices, family life, and parish service should likewise help others encounter Christ and receive life in his name.
Eucharistic Connection
The signs in John’s Gospel point toward the sacramental life of the Church. The multiplication of the loaves and the Bread of Life discourse prepare us to recognize Jesus in the Eucharist.
At every Holy Qurbana, the Gospel is proclaimed so that we may believe, and the Body and Blood of Christ are given so that we may have life. Jesus promised, “Whoever eats my flesh and drinks my blood has eternal life” (Jn 6:54).
The movement described in this passage is therefore experienced in the liturgy: we hear the testimony, profess our faith, receive Christ, and are sent to live in his name.
Messages / Call to Conversion
- I will read the Gospel with a heart open to faith and conversion.
- I will profess Jesus as the Messiah and the Son of God.
- I will seek life in Christ rather than in temporary success or possessions.
- I will deepen my faith through Scripture, Sacred Tradition, and the sacraments.
- I resolve to help others believe through my words, example, and Christian service.
Outline for Preachers
- Context: the original conclusion and stated purpose of John’s Gospel
- Life connection: reading for information versus reading for transformation
- Jesus did many other signs—the richness of Christ’s ministry
- Signs as revelations of Jesus’ identity
- Apostolic testimony as the foundation of Christian proclamation
- These are written—the enduring mission of Sacred Scripture
- “Come to believe” and “continue to believe”
- Jesus as the promised Messiah
- Jesus as the divine Son of God
- Faith as trust, communion, and obedience
- That you may have life in his name
- Scripture and Sacred Tradition within the life of the Church
- Holy Qurbana as hearing, believing, receiving, and being sent
- Call to conversion: believe, live, and bear witness
