Prayer

Timothy Keller argues that prayer is both a conversation and an encounter with God, combining awe and intimacy, struggle and spiritual reality. He identifies a gap in existing literature: Older works on prayer are rich in wisdom but written in archaic language, and modern treatments tend to be either theological, experiential, or practical but rarely all three. This book attempts to integrate all three dimensions.

Keller begins with personal narrative. In 1999, while teaching on the Psalms, he recognized he was barely engaging with what Scripture commanded about prayer. Then came the September 11 attacks, his wife Kathy's struggle with Crohn's disease (a chronic inflammatory condition of the digestive tract), and his own diagnosis of thyroid cancer. Kathy urged him to pray with her every night, comparing prayer's necessity to a life-saving medication one could never skip. He also introduces Flannery O'Connor's 1946 prayer journal, in which the young writer processed struggles with ambition and mediocrity through honest prayer, yet concluded one entry with the plea, "Can't anyone teach me how to pray?" (12). Keller found his way forward by returning to his theological roots, particularly the writings of Martin Luther, John Calvin, the 17th-century theologian John Owen, and the 18th-century theologian Jonathan Edwards. In these thinkers he discovered what Scottish theologian John Murray called an intelligent mysticism, an encounter with God engaging both the heart's affections and the mind's convictions.

Keller identifies two competing views of prayer in contemporary Christian writing: "communion-centered" prayer, which emphasizes resting peacefully in God's presence, and "kingdom-centered" prayer, which sees prayer as a wrestling match calling God to advance his purposes. He examines the Psalms and finds both views represented, arguing the two are neither opposites nor separate categories but deeply intertwined: Adoration contains supplication, and kingdom-seeking prayer must include a desire to know God himself.

Keller surveys prayer as a global phenomenon present across all major religions and even among nonreligious people. He engages most extensively with German scholar Friedrich Heiler's distinction between "mystical" prayer, which aims at dissolution of the self into the divine through silent contemplation, and "prophetic" prayer, which addresses a personal, transcendent God through verbal praise and passionate emotion. Keller sides largely with Heiler that prayer assuming God's personality is superior to prayer that loses communication between persons. He arrives at a definition: Prayer is a personal, communicative response to the knowledge of God. At its most basic, prayer is a human instinct rooted in a vague sense of the divine; through Scripture and the Holy Spirit, it becomes a genuine conversation with God as Father.

Central to the argument is that prayer must be grounded in Scripture. Drawing on philosopher Nicholas Wolterstorff and theologian Timothy Ward, Keller contends that God's words are identical with his actions; to encounter Scripture is to encounter God himself. Prayers should arise from immersion in the Bible, not from subjective impressions. Untethered from Scripture, prayer risks becoming a conversation with a God of our own making. Keller illustrates this danger with the 18th-century evangelist George Whitefield, who publicly prophesied that his newborn son would become a great preacher, only for the infant to die at four months. Whitefield recognized he had mistaken his own hopes for God's voice.

Keller devotes substantial attention to three historical teachers on prayer. He summarizes Augustine's letter to a Roman noblewoman named Anicia Faltonia Proba, in which Augustine argues that before knowing what to pray for, one must recognize that no earthly circumstances bring lasting happiness and that the heart's loves are disordered. He presents Martin Luther's "A Simple Way to Pray," written to his barber Peter Beskendorf, which counsels twice-daily prayer preceded by meditation on Scripture divided into four strands: instruction, thanksgiving, confession, and petition. Luther also advises watching for the Holy Spirit: If rich thoughts come, one should set aside routine and listen, because "one word of his sermon is better than a thousand of our prayers" (95). Keller then presents John Calvin's rules for prayer from the Institutes of the Christian Religion: reverence before God's majesty, spiritual humility, submissive trust balanced with confident hope, and the overarching rule of grace, which holds that only Christ's mediation makes prayer possible.

Keller expounds the Lord's Prayer through all three teachers, tracing its movement from adoration ("hallowed be thy name," "thy kingdom come," "thy will be done") through petition ("give us our daily bread"), confession ("forgive us our debts"), and protection ("lead us not into temptation, deliver us from evil"). He emphasizes that the first three petitions focus on God: Adoration heals the heart of self-centeredness before the prayer turns to human needs. He distills these teachings into 12 touchstones organized around what prayer is, what it requires, what it gives, and where it takes us.

The book's later chapters address the deepening of prayer. Keller develops meditation on Scripture as the essential bridge between Bible study and prayer, drawing on Psalm 1's image of a tree planted by streams of water. He presents Owen's three stages of meditation: fixing the mind on a biblical truth, inclining the heart until it is moved by that truth, and then either savoring an experience of God's presence or crying out to God in dryness. Jesus, Keller argues, is both the exemplar and the ultimate object of meditation, the one to whom all Scripture points.

Keller explores how prayer moves from conversation to encounter, examining Paul's prayer in Ephesians 3 that believers would grasp the full dimensions of Christ's love. He argues that many Christians possess all the blessings of salvation objectively but fail to experience them. Drawing on Edwards's distinction between knowing that honey is sweet from reports and tasting its sweetness directly, he contends the Spirit creates inner sensitivity to gospel truth that transforms intellectual assent into lived experience. He also engages Owen's theology of the "beatific vision," the direct sight of God's glory available partially now through faith. Owen warned that if Christ's beauty does not capture our imaginations, something else will, and we will be enslaved to whatever does. Yet Owen balanced this with a caution: Where doctrinal knowledge leaves the heart behind, it leads to empty formalism, but where affections outrun knowledge, they sink into superstition.

The final chapters treat three fundamental forms of prayer: praise (the motivating force that reorders disordered loves), confession (which requires holding together both the freeness and costliness of forgiveness in Christ), and supplication (which involves both assertive petition and restful submission to God's wisdom). Keller addresses seemingly unanswered prayer by pointing to Jesus' own experience: In Gethsemane, Jesus prayed that the cup of suffering be taken from him, and on the cross he cried out to God but was forsaken, despite being the only person who deserved to have all his prayers answered. Jesus received the rejection sinners deserve so that believers' prayers could receive the reception Jesus deserves.

Keller concludes with practical guidance for daily prayer, outlining a five-part framework: evocation (recollecting who God is), meditation on Scripture, Word prayer (praying the text back to God), free prayer, and contemplation. He provides concrete daily plans and guidance on praying the Psalms. His closing image is of a soul as a boat with both oars and a sail: Sailing represents times when God's presence is felt, rowing represents persisting in spiritual dryness, drifting means giving in to self-pity, and sinking means potential abandonment of faith. His final exhortation is to pray regardless of circumstances, because even prayer in the dark is forward motion.