Richard J. Foster’s "Streams of Living Water: Celebrating the Great Traditions of Christian Faith" is one of his most ambitious attempts to describe the richness and diversity of Christian spirituality. Published originally in 1998, the book builds upon Foster’s earlier work, especially "Celebration of Discipline", but moves beyond a catalog of spiritual practices to ask a larger question: What does a mature Christian life look like when the whole breadth of the Christian tradition is taken seriously? Foster’s answer is that Christianity contains several great spiritual “streams,” each flowing from the life of Jesus and each emphasizing something essential about following God.
The central metaphor of the book is a river. Christianity, Foster argues, is like a great river fed by multiple streams. Over the centuries, Christians have often isolated one stream from the others and treated it as though it were the whole Christian faith. Some have emphasized prayer and contemplation. Others have emphasized holiness and moral transformation. Others have focused on the Holy Spirit, evangelism, social justice, or sacramental life. Foster believes that each emphasis contains genuine Christian wisdom, but each becomes distorted when separated from the others. Spiritual maturity therefore requires learning to draw from the whole river.
The six streams Foster identifies are the Contemplative, Holiness, Charismatic, Social Justice, Evangelical, and Incarnational traditions. He describes them respectively as the prayer-filled life, the virtuous life, the Spirit-empowered life, the compassionate life, the Word-centered life, and the sacramental life. His purpose is not primarily to classify denominations. Rather, these are dimensions of Christian experience that can appear within many different denominations and movements.
Jesus as the Source of the River
Foster begins with Jesus because he does not want the six traditions to become merely a history of Christian movements. Jesus is the “divine paradigm” through whom the different streams can be understood. The Christian life is fundamentally about becoming like Christ, and the various traditions represent different ways in which Christians have attempted to live out that calling.
Jesus prayed deeply and regularly. He withdrew into solitude. He lived a life of moral integrity. He ministered through the power of the Spirit. He proclaimed the kingdom of God. He showed extraordinary compassion toward the poor, marginalized, sick, and excluded. He embodied God’s presence in ordinary human life. He participated in the religious practices of Israel while also challenging their misuse. In Foster’s interpretation, therefore, the six streams are not artificial categories imposed upon Christianity. They are different aspects of the life of Jesus that have been emphasized and developed by different Christian communities throughout history.
This is important to Foster’s larger argument. Christian spirituality should not be reduced to believing certain doctrines, practicing certain disciplines, attending certain services, or belonging to a particular denomination. The goal is transformation into the likeness of Christ. The various streams provide different resources for that transformation.
Foster also makes an important distinction between being saved by Christ and learning to live the life of Christ. Christianity rightly emphasizes the death and resurrection of Jesus, but Foster believes that Christians sometimes neglect the significance of Jesus’ actual life. The way Jesus prayed, loved, served, suffered, taught, healed, confronted injustice, and related to God provides the pattern for Christian existence. Spiritual formation therefore involves more than accepting forgiveness. It involves learning how to live.
The Contemplative Tradition: The Prayer-Filled Life
The first stream is the Contemplative tradition, which Foster describes as the prayer-filled life. Its central concern is intimacy with God. It asks whether Christianity can truly be understood apart from a deep interior relationship with God.
Foster sees this tradition extending from biblical figures such as Moses, David, Elijah, and Jesus himself through the great Christian mystics and contemplatives. The Christian contemplative tradition includes figures such as Augustine, Bernard of Clairvaux, Teresa of Ávila, John of the Cross, Brother Lawrence, and others who sought God not merely through intellectual belief but through direct awareness of God’s presence.
The contemplative tradition teaches that prayer is more than presenting requests to God. Prayer can become communion, silence, listening, worship, surrender, and loving attention. The purpose of contemplation is not escape from the world but deeper union with God that transforms the way one returns to the world.
Foster is particularly concerned with the danger of superficial Christianity. A person can know about God without actually knowing God. Religious activity can become a substitute for relationship. The contemplative stream attempts to correct this by bringing the person into the presence of God.
Practices associated with this stream include solitude, silence, meditation, contemplation, prayer, spiritual reading, retreat, and attentiveness to God’s presence.
Yet Foster also recognizes a potential danger. Contemplation can become inward-looking spirituality that neglects the needs of other people. A person can become so interested in interior experience that compassion, justice, evangelism, and service disappear. The contemplative life therefore needs the other streams to keep it grounded.
The deepest lesson of the contemplative tradition is that Christian spirituality begins with God rather than with religious activity.
The Holiness Tradition: The Virtuous Life
The second stream is the Holiness tradition, which Foster calls the virtuous life. Its central concern is transformation of character.
Christianity, Foster argues, cannot be reduced to what Christians believe. Faith must become visible in the kind of people Christians become. The question is not merely whether a person has received forgiveness but whether that person is gradually becoming loving, truthful, humble, patient, compassionate, courageous, and self-controlled.
This tradition has deep biblical roots in the call to holiness. Foster traces it through figures and movements emphasizing sanctification and moral transformation. Christian holiness involves more than following rules. It means allowing God to reshape the inner person so that virtuous actions increasingly flow naturally from a transformed character.
Foster’s understanding of holiness is therefore relational rather than merely legalistic. The Christian does not become holy simply by obeying an external code. The goal is to become the kind of person whose desires themselves are being reordered toward God and the good.
This is closely related to Foster’s broader understanding of spiritual disciplines. Disciplines such as fasting, confession, simplicity, submission, solitude, study, and service do not earn God’s favor. Instead, they create conditions in which God can transform the person.
The danger of the holiness stream is that it can degenerate into moralism. Christians can begin measuring themselves and others by external standards and become judgmental, perfectionistic, or self-righteous. Holiness without grace can become legalism.
The strength of this tradition, however, is indispensable. It reminds Christianity that grace is intended to transform human character.
The Charismatic Tradition: The Spirit-Empowered Life
The third stream is the Charismatic tradition, which Foster describes as the Spirit-empowered life.
This tradition emphasizes the active presence and power of the Holy Spirit. Christianity is not simply an intellectual or moral system. It is a life in which God acts, guides, empowers, heals, inspires, and gives spiritual gifts.
Foster sees charismatic Christianity in a broad historical sense. He identifies various moments and figures in Christian history in which Christians have emphasized spiritual gifts, divine guidance, healing, prophetic experience, ecstatic worship, revival, and an immediate awareness of the Holy Spirit.
The biblical foundation is especially strong in Acts and the writings of Paul, where the church is portrayed as a Spirit-filled community equipped with diverse gifts.
Foster wants Christians who may be uncomfortable with charismatic experience to recognize that the New Testament presents the Spirit as an active reality rather than merely a theological doctrine. At the same time, he wants charismatic Christians to recognize the importance of the other streams.
The potential danger is obvious. Spiritual experience can become an end in itself. Christians can begin to measure spirituality by extraordinary experiences, emotional intensity, miracles, or displays of spiritual power. Spiritual gifts can become occasions for competition or spiritual pride.
Foster therefore places charismatic experience within the larger goal of becoming like Christ. The question is not simply whether someone has experienced spiritual power. The question is whether that power produces love, humility, service, holiness, and compassion.
The charismatic tradition’s great contribution is its reminder that Christianity is a living relationship with a living God through the Holy Spirit.
The Social Justice Tradition: The Compassionate Life
The fourth stream is the Social Justice tradition, which Foster describes as the compassionate life.
This may be one of the most important correctives in the book because Foster refuses to allow spirituality to become detached from human suffering. If God loves people, then Christians must care about the conditions in which people live.
The biblical roots of this stream are extensive. The prophets repeatedly condemn exploitation, oppression, corruption, and neglect of the poor. Jesus announces good news to the poor and identifies himself with the hungry, thirsty, imprisoned, sick, and marginalized.
Foster therefore sees compassion and justice as integral to Christian spirituality. Prayer that never leads to love of neighbor is incomplete. Worship that ignores suffering is incomplete. Personal holiness that remains indifferent to injustice is incomplete.
Historically, Foster points toward Christian figures who embodied compassion, including those who served the poor, opposed oppression, reformed institutions, cared for the sick, or challenged social injustice.
The tradition encompasses both personal acts of mercy and broader concern for social structures. Christianity is concerned not only with whether individual people behave morally but also with whether communities and institutions embody justice.
Yet Foster recognizes the dangers here as well. Social activism can become ideological, angry, or disconnected from spiritual life. Christians can become so focused on changing society that they neglect prayer, personal holiness, evangelism, or dependence upon God.
The social justice stream therefore calls Christians to love their neighbors not merely in sentiment but in concrete action.
The Evangelical Tradition: The Word-Centered Life
The fifth stream is the Evangelical tradition, which Foster calls the Word-centered life.
Here the emphasis falls upon Scripture, proclamation, conversion, discipleship, and the communication of the gospel. Christianity is fundamentally a faith that has something to say. The story of God must be proclaimed, taught, interpreted, and embodied.
Foster’s treatment is broader than the modern American meaning of the word “evangelical.” He uses the term historically to describe a tradition centered upon the gospel and the Word of God. This includes biblical preaching, evangelism, conversion, theological reflection, Scripture study, and the defense and communication of Christian faith.
The Evangelical tradition reminds Christians that spiritual experience needs biblical grounding. Contemplation without Scripture can become subjective. Charismatic experience without discernment can become unstable. Social activism without the gospel can lose its specifically Christian identity.
At its best, the Evangelical stream combines proclamation with transformation. The gospel is not simply information about salvation. It is an announcement of God’s kingdom that calls people into a new way of life.
Foster uses figures from Christian history to illustrate this tradition, including Augustine and others whose lives demonstrate the power of Scripture and proclamation.
But again, the tradition has its own potential distortions. Evangelism can become manipulative. Biblical commitment can become intellectualism. Defense of doctrine can become hostility toward those who disagree. Christians can become more concerned with being right than with embodying the love about which Scripture speaks.
The strength of this stream is its insistence that Christian faith is rooted in a story, a revelation, and a gospel that must be heard, understood, lived, and shared.
The Incarnational Tradition: The Sacramental Life
The sixth stream is the Incarnational tradition, which Foster describes as the sacramental life.
This tradition emphasizes God’s presence in the physical and ordinary dimensions of life. The word “incarnational” points to the Christian belief that God became human in Jesus. If God has entered material existence, then the physical world cannot simply be regarded as spiritually inferior.
The Incarnational tradition therefore emphasizes worship, community, beauty, the body, place, time, ordinary work, hospitality, and sacramental practices. It reminds Christians that God can be encountered not only in private prayer or extraordinary religious experiences but also in ordinary life.
This stream has strong connections with sacramental Christianity, particularly Catholic, Orthodox, Anglican, and other traditions that place great importance on baptism, Eucharist, liturgical worship, sacred symbols, and the rhythms of the church year. But Foster’s category is broader than sacramental theology alone. It also concerns the recognition of God’s presence in everyday existence.
The incarnation means that matter matters.
Bread and wine can become signs of divine grace. Water can signify cleansing and new life. A meal can become an expression of communion. A physical community can become a place where Christ is encountered. Ordinary acts of hospitality can become spiritual practices.
The danger is that sacramentalism can become ritualism. Religious practices can continue after their original spiritual meaning has been forgotten. People can confuse participation in religious ceremonies with transformation of life.
The great contribution of this tradition is its insistence that God is not confined to private religious experience but is encountered within embodied, communal, material life.
The Six Streams Belong Together
The central argument of Streams of Living Water becomes clearest when Foster brings these traditions together.
Each stream answers a different question.
The Contemplative tradition asks: How do I experience intimacy with God?
The Holiness tradition asks: How am I transformed into a person of virtue?
The Charismatic tradition asks: How does the Holy Spirit empower and guide me?
The Social Justice tradition asks: How do I love and serve those who suffer?
The Evangelical tradition asks: How do I hear, understand, proclaim, and live the gospel?
The Incarnational tradition asks: How can God’s presence become tangible in ordinary embodied life?
None of these questions can safely be eliminated.
A Christian who emphasizes contemplation but ignores justice may become detached from suffering. A Christian who emphasizes holiness without grace may become judgmental. A Christian who emphasizes charismatic experience without discernment may become unstable. A Christian who emphasizes justice without prayer may become exhausted or ideological. A Christian who emphasizes Scripture without compassion may become rigid. A Christian who emphasizes sacramental practice without transformation may become merely ritualistic.
The mature Christian life requires integration.
This is Foster’s most important contribution to the book. He is not asking Christians to choose which stream is correct. He is asking them to recognize that the different streams are complementary expressions of the one life of Christ.
The Importance of Spiritual Traditions
Foster’s approach also challenges the tendency to think of Christianity primarily in denominational terms.
Catholic, Orthodox, Anglican, Lutheran, Presbyterian, Methodist, Baptist, Pentecostal, Quaker, and other traditions have often developed different spiritual emphases. Foster sees these differences not simply as unfortunate divisions but as opportunities for the wider Christian community to learn.
One tradition may teach the church how to pray. Another may teach it how to read Scripture. Another may teach it how to pursue holiness. Another may teach it how to serve the poor. Another may teach it how to recognize the activity of the Holy Spirit. Another may teach it how to encounter God through worship, community, and sacrament.
This means that Christian maturity may involve learning from traditions other than one’s own.
Foster’s vision is consequently ecumenical. He is not arguing that all Christian traditions are identical. Rather, he believes that Christians can receive gifts from traditions that emphasize dimensions of faith they themselves may have neglected.
Spiritual Disciplines as Means of Transformation
The book also continues Foster’s longstanding emphasis upon spiritual disciplines.
The disciplines are not religious exercises performed to earn God’s acceptance. They are practices that make room for transformation. Prayer, fasting, solitude, study, confession, worship, service, simplicity, celebration, silence, and community can gradually reshape the person.
This reflects Foster’s larger understanding of spiritual formation. Human beings are being formed all the time by their habits, desires, relationships, cultural environment, and choices. The Christian question is therefore not whether we are being formed but what is forming us.
The six streams provide different disciplines for that formation.
The contemplative stream cultivates silence and prayer.
The holiness stream cultivates practices that reshape character.
The charismatic stream cultivates openness to the Spirit.
The justice stream cultivates service and compassion.
The evangelical stream cultivates Scripture, study, proclamation, and discipleship.
The incarnational stream cultivates worship, community, sacramental awareness, and attentiveness to God’s presence in ordinary life.
Spiritual formation is therefore not merely about acquiring information. It is about becoming a different kind of person.
The Book’s Larger Vision of Christian Maturity
Ultimately, Foster’s vision is holistic.
He wants to move Christianity beyond the recurring tendency to divide faith into competing camps. Christianity can become intellectual versus experiential, personal versus social, traditional versus contemporary, contemplative versus activist, evangelical versus sacramental, charismatic versus rational.
Foster argues that these oppositions are often unnecessary.
A Christian can pray deeply and work for justice.
A Christian can love Scripture and value mystical experience.
A Christian can pursue holiness and celebrate grace.
A Christian can value tradition while remaining open to the Spirit.
A Christian can practice evangelism while caring deeply about social transformation.
A Christian can encounter God in solitude and in community.
The goal is not a spiritual life that becomes equally intense in every dimension. Individuals will naturally have particular gifts and inclinations. Some will be naturally contemplative. Others will be activists. Some will be teachers. Others will be evangelists. Some will be drawn toward sacramental worship. Others toward charismatic experience.
Foster’s point is that personal preference should not become spiritual absolutism.
What one Christian finds most natural may be precisely the dimension another Christian needs to learn.
The River and the Future of Christianity
The metaphor of the river ultimately becomes a vision for Christian renewal.
Foster believes that Christianity’s future does not require inventing an entirely new spirituality. Much of what the church needs already exists within its historical memory.
The Christian tradition possesses enormous spiritual resources, but those resources have often been separated into competing communities. The contemplatives have their traditions. The holiness Christians have theirs. Charismatics have theirs. Evangelicals have theirs. Social activists have theirs. Sacramental Christians have theirs.
Foster’s hope is that these streams can once again flow together.
The result would be a Christianity that is contemplative without becoming withdrawn, holy without becoming legalistic, charismatic without becoming sensationalistic, socially engaged without becoming ideological, evangelical without becoming triumphalistic, and sacramental without becoming merely ritualistic.
In this vision, spiritual renewal is not primarily a matter of creating a new denomination or discovering a new technique. It is a matter of recovering the fullness of Christian life.
A Critical Perspective on Foster’s Approach
Foster’s model is powerful precisely because it is generous. He approaches Christian traditions with the assumption that each contains genuine wisdom. His purpose is reconciliation rather than polemic.
At the same time, the six-stream model is Foster’s interpretive framework rather than a universally accepted map of Christian history. Some of his categories are broad enough to place very different historical figures and movements together. His treatment is therefore best understood as spiritual theology rather than as a comprehensive academic history of Christianity.
The categories can sometimes blur important theological differences. For example, calling diverse figures “charismatic” or placing very different movements within the same stream can illuminate a shared emphasis while also obscuring significant historical distinctions. Foster’s goal is not to provide the final scholarly classification of Christianity. His goal is to help Christians recognize the spiritual gifts contained within the larger Christian tradition.
That distinction is important when reading the book. Streams of Living Water is ultimately a work of spiritual formation, not merely historical analysis.
The Central Message of the Book
The deepest message of Streams of Living Water is that no single Christian tradition contains the whole of Christian spirituality.
The Christian life is too large to be contained within one denomination, one worship style, one theological emphasis, or one spiritual temperament.
The river is larger than any individual stream.
For Foster, Jesus is the source of that river. The different traditions represent historical attempts to live particular dimensions of Jesus’ life and teaching. The task of contemporary Christians is therefore not to abandon those traditions but to learn from them, receive their gifts, recognize their weaknesses, and allow them to flow together into a more complete life of discipleship.
The result is a vision of Christianity in which prayer leads to compassion, compassion is grounded in Scripture, Scripture leads toward holiness, holiness is empowered by the Spirit, the Spirit is encountered within embodied community, and all of it is directed toward becoming like Christ.
In that sense, the title Streams of Living Water is more than a metaphor for different denominations or spiritual movements. It expresses Foster’s understanding of Christian transformation itself. God’s life is like a river continually flowing toward the human person, and the great traditions of Christianity are different channels through which that life has historically reached the church. Spiritual maturity comes when Christians learn to drink deeply from the whole river rather than insisting that their own stream is the only one that matters.
For a project such as Thirdwell.org, the book is especially valuable because it provides a framework for understanding why Christianity has developed such a remarkable diversity of spiritual expressions without necessarily concluding that one expression must invalidate all the others. Foster offers a way of seeing Christian history not simply as a history of doctrinal disputes and institutional divisions, but also as a history of different ways human beings have sought to live in the presence of God.
This makes Streams of Living Water an important companion to your broader exploration of the evolution of religious ideas. Rather than asking only, “What did Christians believe?” Foster invites a different question: “How have Christians tried to live?” That shift from belief alone to lived spirituality is one of the book’s most enduring contributions.