JOHN 17:20–26 – THAT THEY MAY ALL BE ONE
CHRISTIAN UNITY AS A SIGN OF THE FATHER’S LOVE AND CHRIST’S MISSION
Introduction
At the conclusion of the Last Supper, Jesus turned from teaching his disciples to praying for them. This solemn prayer, recorded in John 17, is traditionally called the High Priestly Prayer because Jesus intercedes for his disciples as he prepares to offer himself upon the Cross.
Jesus prayed not only for the apostles gathered around him but also for all who would later believe through their proclamation. Therefore, every generation of Christians is included in this prayer. On the night before his Crucifixion, Jesus saw the future Church and prayed for us.
The central theme of this passage is the unity of Christ’s disciples. Jesus desires a unity modeled upon the communion between the Father and the Son. Such unity does not eliminate legitimate diversity. It brings different people together in the same faith, love, sacramental life, and apostolic mission.
Christian unity is also essential for evangelization. Jesus prayed that his followers might be one “so that the world may believe” that the Father sent him. When Christians live in communion, they make God’s love visible. When they are divided by pride, rivalry, prejudice, or hostility, their witness to the Gospel is weakened.
Bible Passage (John 17:20–26)
Jesus prayed to the Father not only for the apostles but also for those who would believe in him through their word. He asked that all his disciples might be one, just as the Father is in the Son and the Son is in the Father. He desired that believers might remain in this divine communion so that the world might believe that the Father had sent him.
Jesus declared that he had given his disciples the glory he received from the Father so that they might be one. He prayed that they might be brought to perfection as one and that the world might know that the Father sent him and loved his disciples.
Jesus also desired that those whom the Father had given him might one day be with him and behold his heavenly glory. He addressed God as the righteous Father and affirmed that, although the world did not know the Father, Jesus knew him, and the disciples recognized that the Father had sent him. Jesus had made the Father’s name known and would continue to reveal it so that the Father’s love might remain in his disciples and Christ himself might dwell in them.
Background
John 17 concludes the Farewell Discourse that began after Jesus washed the feet of his disciples. Jesus knew that Judas had gone out to betray him and that his arrest, trial, suffering, and Death were approaching. Yet his attention remained fixed on the Father’s glory and the spiritual welfare of his disciples.
The prayer has three principal movements. First, Jesus prayed concerning his glorification and the completion of his mission (Jn 17:1–5). Second, he prayed for the apostles who had received his word and would continue his mission (Jn 17:6–19). Third, he prayed for future believers who would come to faith through the apostolic proclamation (Jn 17:20–26).
The final section reveals that the Church is essentially apostolic. Future generations would believe because the apostles proclaimed what they had seen and heard. Their testimony would be preserved and transmitted through the Church under the guidance of the Holy Spirit.
The prayer also reveals the deepest source of Christian unity. The unity of the Church does not arise merely from friendship, common interests, ethnic identity, or administrative organization. It flows from the communion of the Father, the Son, and the Holy Spirit. Christians become one by participating in the life and love of the Triune God.
Opening Life Connection
Division is one of the most painful realities of human life. Marriages can be wounded by resentment. Parents and children may stop communicating. Siblings may become estranged over property or misunderstandings. Parishes can be weakened by factions, personal loyalties, and competition. Christian communities remain separated by historical, theological, and cultural disputes.
Such divisions often begin with small matters but grow when pride prevents reconciliation. People may defend their opinions so forcefully that they forget their relationship. They may seek victory in an argument while losing peace, communion, and mutual respect.
Jesus’ prayer calls us to examine whether we contribute to unity or division. Christian unity does not require silence in the face of error or injustice. It requires that truth be spoken with love, disagreements be handled with humility, and reconciliation be sought through prayer, dialogue, forgiveness, and obedience to Christ.
Verse-by-Verse / Phrase-by-Phrase Reflection
“I pray not only for them” (Jn 17:20)
Jesus had already prayed for the apostles who were present at the Last Supper. He now extended his prayer beyond them to all future believers. His vision embraced every nation, culture, language, and generation.
This is deeply consoling. Before his Passion, Jesus personally prayed for everyone who would come to believe in him, including us. Christian faith is therefore not merely a human search for God. It is also our response to Christ, who knew us, loved us, and interceded for us before we were born.
Jesus’ prayer shows that the Church was always part of his saving plan. He knew that the apostles would proclaim the Gospel and that their testimony would bring others to faith.
“But also for those who will believe in me through their word” (Jn 17:20)
Future believers would come to Christ “through their word.” The apostles were entrusted with the Gospel they had received from Jesus. Their preaching, teaching, sacramental ministry, and witness became the foundation of the Church’s missionary life.
The Christian faith is apostolic because it rests upon the testimony of the apostles and remains faithful to their teaching. The Church does not invent a new Gospel for each generation. She receives the faith, safeguards it, interprets it authentically, lives it, and hands it on.
This verse also gives every Christian a missionary responsibility. Our words and actions can help others believe in Christ. Parents transmit the faith to their children. Catechists form the young. Priests proclaim the Word and celebrate the sacraments. Laypeople witness to Christ in family life, workplaces, public service, and society.
“That they may all be one” (Jn 17:21)
This is the central petition of Jesus’ prayer. He does not pray merely that Christians may cooperate occasionally or tolerate one another. He prays that they may be one.
Sin divides, while grace gathers and reconciles. Satan introduced distrust into the relationship between God and humanity and conflict into human relationships. Cain turned against Abel, families became divided, nations went to war, and even religious communities experienced rivalry.
Jesus came to gather the scattered children of God into one (Jn 11:52). He described his mission as bringing the sheep together so that there would be “one flock, one shepherd” (Jn 10:16). His Death would break down the barriers created by sin and reconcile humanity with God and with one another.
Christian unity is therefore not optional. It belongs to the very purpose of Christ’s saving mission.
“As you, Father, are in me and I in you” (Jn 17:21)
The model of Christian unity is the perfect communion between the Father and the Son. The Father and the Son are distinct divine Persons, yet they are perfectly one in divine nature, love, will, and mission.
Similarly, unity among Christians does not erase personality, culture, legitimate customs, or diversity of gifts. Unity is not uniformity. Members of the Church have different vocations and responsibilities, but they belong to one Body and serve one mission.
Saint Paul compares the Church to a human body. The body has many members, and each has a distinct function, but all belong to one body (1 Cor 12:12–27). Diversity becomes fruitful when every gift serves the common good. It becomes destructive when gifts are used for competition, self-promotion, or division.
“That they also may be in us” (Jn 17:21)
Christian unity begins with communion with God. Human efforts alone cannot produce the unity for which Jesus prayed. Believers become one by living in the Father and the Son through the Holy Spirit.
Jesus had already promised that the Father and the Son would dwell in those who love him and keep his word (Jn 14:23). This divine indwelling is the foundation of ecclesial communion.
The closer Christians draw to Christ, the closer they come to one another. Conversely, division often grows when personal ambition, resentment, prejudice, or attachment to power replaces communion with God.
Prayer, Scripture, the sacraments, obedience to the Gospel, and works of charity are therefore essential means of building unity.
“That the world may believe that you sent me” (Jn 17:21)
Jesus connects the unity of his disciples with the success of their mission. The world is more likely to believe the Gospel when it sees Christians living in genuine communion.
The unity of the first Christian community became a powerful testimony. The believers devoted themselves to the teaching of the apostles, communal life, the breaking of bread, and prayer (Acts 2:42). They were united in heart and mind and cared for one another’s needs (Acts 4:32–35).
Their manner of life attracted others to Christ. Unity gave credibility to their proclamation because it made the transforming power of the Gospel visible.
Division produces the opposite effect. Hostility among Christians can lead others to question the truth of the faith they proclaim. The healing of division is therefore not merely an internal matter. It is part of the Church’s responsibility to evangelize the world.
“And I have given them the glory you gave me” (Jn 17:22)
In Scripture, glory refers to the manifestation of God’s holiness, power, beauty, and saving presence. Creation declares God’s glory (Ps 19:2), and the history of Israel reveals his mighty works.
The fullest revelation of God’s glory is Jesus Christ. “The Word became flesh and made his dwelling among us, and we saw his glory” (Jn 1:14). Jesus revealed the Father through his teaching, miracles, obedience, love, Death, and Resurrection.
In John’s Gospel, the Cross is not merely humiliation; it is also the glorification of Jesus because it reveals the depth of God’s self-giving love. Christ shared this glory with his disciples by giving them his word, his Spirit, his mission, and participation in divine life.
The glory entrusted to Christians is not worldly honor or prestige. It is the privilege of knowing God, sharing his life, reflecting his love, and continuing Christ’s mission.
“So that they may be one, as we are one” (Jn 17:22)
Jesus repeats his petition because unity is essential to the identity of the Church. The unity between the Father and the Son becomes both the source and model of communion among believers.
This unity requires more than external membership. Christians must share a living faith, mutual love, sacramental communion, and commitment to the mission of Christ.
True unity cannot be built upon compromise with sin or indifference to truth. At the same time, truth must never become an excuse for hostility, pride, or contempt. Christian unity joins truth with charity, fidelity with humility, and conviction with respect.
“I in them and you in me” (Jn 17:23)
Jesus desires to live within his disciples. Through Baptism, Christians are united with Christ’s Death and Resurrection and become members of his Body. Through the Holy Spirit, Christ continues to dwell in them.
Jesus’ presence reaches a unique sacramental fullness in the Eucharist. Those who receive the Body and Blood of Christ enter more deeply into communion with him and with one another.
The Eucharist is therefore both the sacrament of Christ’s real presence and the sacrament of ecclesial unity. We cannot sincerely receive the one Body of Christ while deliberately fostering hatred, division, or contempt toward other members of his Body.
“That they may be brought to perfection as one” (Jn 17:23)
Christian unity is both a gift and a task. It is already given through Baptism and membership in Christ, but it must continually grow toward perfection.
The Church’s unity is wounded whenever believers place personal interests above the Gospel. It is strengthened whenever they forgive, serve, listen, reconcile, and seek the common good.
The early Church faced real disagreements. The complaint concerning the care of widows was resolved by appointing seven men for service (Acts 6:1–7). The controversy over Gentile converts was addressed through prayer, discussion, apostolic discernment, and the Council of Jerusalem (Acts 15).
These examples show that unity does not require the absence of disagreement. It requires a Christ-centered way of resolving disagreement.
“That the world may know that you sent me” (Jn 17:23)
Jesus again emphasizes the missionary effect of unity. In verse 21, he prayed that the world might believe. Here he prays that the world might know.
Christians reveal the divine origin of Jesus when their lives display a love that rises above race, nationality, language, social status, and personal interest. Such communion cannot be explained merely by natural attraction. It points toward God’s transforming grace.
A parish becomes an effective witness when its members worship together, care for the vulnerable, support families, welcome newcomers, respect legitimate authority, and work together for the Gospel.
“And that you loved them even as you loved me” (Jn 17:23)
This is one of the most profound statements in the passage. The Father loves the disciples with the love revealed in his Son. Through Christ, believers are welcomed into the communion of divine love.
God’s love is not earned through human achievement. It is a gift made possible through Christ. Nevertheless, those who receive this love are called to live according to it.
To believe that God loves us should lead us to humility, gratitude, and love for others. We cannot claim to live in divine love while refusing mercy, forgiveness, and compassion to our brothers and sisters.
“Father, they are your gift to me” (Jn 17:24)
Jesus regards his disciples as gifts from the Father. This gives extraordinary dignity to every believer. Christians are not accidental members of an organization; they are persons entrusted by the Father to the Son.
This truth should shape how we treat one another. Every member of the Church belongs to Christ. To despise, exploit, or deliberately wound another believer is to mistreat someone whom the Father has given to the Son.
Pastors, parents, catechists, and Church leaders should remember that the people entrusted to them belong first to God. Christian leadership is stewardship rather than ownership.
“I wish that where I am they also may be with me” (Jn 17:24)
Jesus desires the eternal salvation of his followers. He came from the Father to bring humanity into communion with God. His mission would not be complete until his disciples shared his heavenly life.
Earlier, Jesus had promised that he was going to prepare a place for his disciples and would return to take them to himself (Jn 14:2–3). Here he expresses that desire directly to the Father.
Heaven is ultimately being with Christ. The Christian hope of eternal life is not merely escape from suffering or enjoyment of endless happiness. It is perfect communion with the Father, through the Son, in the Holy Spirit.
“That they may see my glory that you gave me” (Jn 17:24)
During his earthly ministry, Christ’s divine glory was concealed beneath the humility of human nature. It was revealed partially in his miracles and especially in the Transfiguration. After his Resurrection and Ascension, he entered the glory that belonged to him.
Jesus desires that his disciples behold this glory. Saint Stephen received a glimpse of it before his martyrdom when he saw the glory of God and Jesus standing at the right hand of the Father (Acts 7:55–56).
The beatific vision is the ultimate fulfillment of this prayer. The redeemed will see God face-to-face and participate eternally in divine life.
“Because you loved me before the foundation of the world” (Jn 17:24)
This statement reveals the eternal existence of the Son. Jesus did not begin to exist at Bethlehem. Before creation, the Son existed in eternal communion with the Father.
The Father’s love for the Son precedes the creation of the universe. Creation and salvation flow from the eternal love of the Trinity.
Saint Paul teaches that God chose us in Christ before the foundation of the world so that we might be holy and without blemish before him (Eph 1:4). Our salvation is therefore part of God’s eternal plan, not a last-minute response to human sin.
“Righteous Father” (Jn 17:25)
Jesus addresses God as the righteous Father. God is perfectly holy, faithful, and just. His judgments are never distorted by ignorance, prejudice, selfishness, or deception.
The righteousness of the Father is revealed in the mission of the Son. Through the Cross, God confronts sin while offering mercy to sinners. Divine justice and divine love meet in Christ’s self-sacrifice.
Believers are called to reflect the Father’s righteousness by living with integrity, fairness, fidelity, and compassion.
“The world also does not know you, but I know you” (Jn 17:25)
In John’s Gospel, “the world” sometimes refers to humanity organized in resistance to God. Although creation reveals the Creator, sin blinds people to his presence and love.
Jesus knows the Father because he comes from the Father and shares the divine nature. He alone reveals the Father perfectly. “Whoever has seen me has seen the Father” (Jn 14:9).
Humanity does not reach full knowledge of God through reason alone. We need the revelation given through Jesus Christ.
“And they know that you sent me” (Jn 17:25)
The disciples did not understand everything Jesus taught, but they had reached the essential conviction that he came from God. Peter expressed this faith when he confessed Jesus as “the Messiah, the Son of the living God” (Mt 16:16).
Their faith was still imperfect and would be tested during the Passion. Nevertheless, Jesus acknowledged it. He sees not only present weakness but also the grace that will bring faith to maturity.
This gives hope to believers who struggle with questions or spiritual weakness. Christ patiently forms those who remain open to him.
“I made known to them your name” (Jn 17:26)
In biblical thought, a name expresses identity and character. To reveal the Father’s name means to reveal who God truly is.
Jesus revealed God not merely through statements but through his whole life. His compassion toward sinners, healing of the sick, welcome of the excluded, forgiveness of enemies, and sacrifice upon the Cross revealed the Father’s merciful love.
The ultimate revelation of God is not an abstract definition but the person of Jesus Christ.
“And I will make it known” (Jn 17:26)
Jesus’ revelation would continue after his Death and Resurrection. The Holy Spirit would guide the apostles into all truth and remind them of everything Jesus had taught (Jn 14:26; 16:13).
Christ continues to reveal the Father through Sacred Scripture, Sacred Tradition, the teaching office of the Church, the sacraments, and the faithful witness of his people.
The Church does not replace Christ. She serves as the instrument through which his revelation and saving presence continue to reach the world.
“That the love with which you loved me may be in them and I in them” (Jn 17:26)
The prayer ends with love and indwelling. Jesus does not ask merely that his disciples know about God’s love. He prays that this divine love may live within them.
The Father’s love comes to believers through Christ and is poured into their hearts by the Holy Spirit (Rom 5:5). This love enables them to forgive, serve, sacrifice, and remain united.
The final purpose of Christian life is communion: the Father loving us through the Son, Christ dwelling within us, and believers sharing divine love with one another.
Biblical and Jewish Context
Unity was an important theme in Israel’s hope. Sin had divided the tribes and eventually led to the separation of the northern and southern kingdoms. The prophets looked forward to a time when God would gather his scattered people.
God promised through Jeremiah, “I will give them one heart and one way” (Jer 32:39). Ezekiel foretold that the divided people would become one nation under one shepherd (Ezek 37:21–24). These promises find their fulfillment in Christ, who gathers Jews and Gentiles into one covenant people.
The Shema proclaimed, “Hear, O Israel! The LORD is our God, the LORD alone!” (Dt 6:4). Israel’s faith in the one God called the covenant community to unity in worship and obedience. Jesus’ prayer brings this biblical theme to its fulfillment by drawing believers into the communion of the Father and the Son.
The title “High Priestly Prayer” also connects Jesus with the role of Israel’s high priest. The high priest interceded for the people, especially on the Day of Atonement. Jesus, the eternal High Priest, intercedes for his disciples as he prepares to offer not an animal sacrifice but his own life.
Catholic Interpretation and Teaching
The Catholic Church professes in the Nicene Creed that the Church is “one, holy, catholic, and apostolic.” Her unity comes from the Trinity: one Father, one Lord Jesus Christ, and one Holy Spirit. It is expressed through one faith, common sacramental life, apostolic succession, and communion under the successor of Peter and the bishops united with him.
The Second Vatican Council teaches that Christ established one Church and that division among Christians contradicts his will, scandalizes the world, and damages the work of evangelization. The restoration of unity among Christians is therefore a concern of the entire Church.
Ecumenism does not mean ignoring doctrinal differences or treating truth as unimportant. It involves conversion of heart, holiness of life, prayer, respectful dialogue, cooperation, and a sincere search for the fullness of unity willed by Christ.
The Catholic Church also recognizes legitimate diversity among her liturgical and spiritual traditions. The Latin Church and the Eastern Catholic Churches possess different liturgies, disciplines, theological expressions, and spiritual heritages while remaining united in the same Catholic faith and ecclesial communion.
The Syro-Malabar Church preserves the East Syriac liturgical tradition while remaining in full communion with the Universal Church. This unity within diversity reflects the Catholic character of the Church.
Lessons from the Early Church
The early Christian community offers practical examples of preserving unity amid disagreements.
When Hellenist widows were neglected in the daily distribution, the apostles listened to the concern and appointed seven qualified men to serve the community (Acts 6:1–7). Unity was protected through attentive leadership and a just pastoral response.
When disagreement arose over whether Gentile converts had to observe circumcision and the entire Mosaic Law, the apostles and elders gathered in Jerusalem. They prayed, listened, debated, discerned the guidance of the Holy Spirit, and reached an authoritative decision (Acts 15).
When factions developed at Corinth, Saint Paul reminded the community that Christ could not be divided. Christians could not define themselves primarily by attachment to Paul, Apollos, or Cephas. Their identity had to remain centered upon Christ (1 Cor 1:10–13).
These examples show that unity requires responsible leadership, open communication, fidelity to apostolic teaching, concern for justice, and obedience to the Holy Spirit.
Saintly Illustration
Saint John Paul II made Christian unity a major concern of his pontificate. He emphasized that commitment to ecumenism is not an optional addition to the Church’s mission but an essential response to Christ’s prayer.
He sought respectful dialogue with Orthodox Churches and other Christian communities while remaining faithful to Catholic teaching. His example shows that unity must be pursued through prayer, personal conversion, mutual respect, patient dialogue, and love grounded in truth.
Christian unity begins when believers allow Christ to purify their memories, heal inherited wounds, and replace suspicion with charity.
Application to Christian Life Today
Jesus’ prayer must first be applied within our families. Unity requires listening, patience, forgiveness, respect, and willingness to place relationships above personal pride. Family prayer and participation in the Eucharist can help heal divisions that ordinary conversation cannot resolve.
In parish life, members should avoid gossip, factions, personal attacks, and competition for influence. Legitimate differences should be addressed through respectful dialogue and appropriate ecclesial structures. Every ministry should serve the mission of Christ rather than personal recognition.
Unity also requires respect for legitimate Church authority. Christ entrusted pastoral responsibility to Peter, the apostles, and their successors. Obedience should be intelligent and faithful, while authority should be exercised as humble service modeled upon Jesus washing the disciples’ feet.
Christians should work and pray for greater unity with other Christian communities. Shared faith in Christ offers opportunities for common prayer where appropriate, charitable service, defense of human dignity, care for the poor, and witness to moral truth.
Unity must never be confused with indifference. Christians are called to preserve the truth revealed by Christ while treating those who disagree with dignity and love.
Eucharistic Connection
The Eucharist is the sacrament of unity. Though many receive the consecrated bread, they become one Body because they share in the one Christ (1 Cor 10:16–17).
At every celebration of the Holy Qurbana or Mass, the Church gathers people of different families, backgrounds, vocations, and social positions around one altar. All listen to the same Word, profess the same faith, offer the same sacrifice, and receive the same Lord.
The sign of peace expresses the reconciliation required before approaching the altar. Jesus taught that a person who remembers a broken relationship should first seek reconciliation and then offer the gift (Mt 5:23–24).
Receiving Holy Communion should strengthen communion within the Church. We cannot authentically receive Christ while deliberately holding on to hatred, contempt, or divisive behavior. The Eucharist calls us to become what we receive—the one Body of Christ.
Lessons for Christian Life
- Recognize that Jesus prayed personally for every believer. We are included among those who believe through the apostolic word.
- Protect unity as a sacred responsibility. Division weakens families, parishes, communities, and the Church’s witness.
- Distinguish unity from uniformity. Legitimate diversity of cultures, gifts, and traditions enriches the one Church.
- Remain faithful to apostolic teaching. Christian unity must be grounded in the truth entrusted by Christ to the apostles.
- Resolve disagreements in a Christian manner. Prayer, dialogue, humility, justice, and responsible authority protect communion.
- Reject gossip and factionalism. Words that damage reputations or create rival groups contradict Christ’s prayer.
- Practice servant leadership. Authority in the Church should follow the example of Christ, who came to serve and give his life.
- Make the family a school of communion. Forgiveness, shared prayer, and mutual sacrifice help families reflect Trinitarian love.
- Pray and work for Christian unity. The divisions among Christians weaken the proclamation of the Gospel.
- Let the Eucharist transform relationships. Communion with Christ must lead to communion with his people.
Messages / Call to Conversion
- Examine whether your words and actions build unity or deepen division.
- Seek reconciliation with anyone from whom pride, anger, or misunderstanding has separated you.
- Refuse to participate in gossip, personal attacks, factionalism, or unnecessary disputes.
- Place Christ and the mission of the Church above personal loyalties and ambitions.
- Respect the legitimate diversity of cultures, traditions, ministries, and spiritual gifts within the Church.
- Remain faithful to the teaching of Christ transmitted through the apostles and preserved by the Church.
- Support the unity of the parish through prayer, cooperation, service, and respect for responsible leadership.
- Receive the Eucharist as a commitment to live in communion with Christ and his Body.
- Pray for healing among divided Christian communities and support appropriate efforts toward full communion.
- Make the love of the Father visible by treating every person as someone entrusted to Christ.
Outline for Preachers
- The High Priestly Prayer at the conclusion of the Last Supper
- Jesus’ prayer for the apostles and all future believers
- Faith transmitted through the apostolic word
- “That they may all be one” as the central petition
- The Trinity as the source and model of Christian unity
- Unity in legitimate diversity rather than mere uniformity
- Christian communion as a witness to the world
- The glory Christ shares with his disciples
- Believers as gifts entrusted by the Father to the Son
- Christ’s desire that his followers share his heavenly glory
- The Father’s eternal love for the Son
- Jesus as the perfect revelation of the Father
- Lessons from conflicts resolved within the early Church
- Catholic teaching on ecclesial unity and ecumenism
- Unity within the Universal Church and the Eastern Catholic traditions
- Family and parish applications
- The Eucharist as the sacrament of unity
- Practical commitment to reconciliation, truth, charity, and mission
