Hunger for God

John Piper's exploration of Christian fasting emerged from his conviction that contemporary evangelicalism had largely abandoned a spiritual discipline central to biblical faith. Writing as pastor of Bethlehem Baptist Church in Minneapolis, Piper observed that while American Christians readily embraced prayer, Bible study, and fellowship, they had neglected fasting—a practice that Jesus assumed his followers would maintain and that marked the early church's spiritual rhythm.

Piper argues that fasting serves as both expression and cultivation of spiritual hunger, a physical manifestation of the soul's longing for God that transcends material satisfaction. He grounds this understanding in careful exegesis of biblical passages, particularly Jesus's teaching that his disciples would fast after his departure and Paul's references to his own fasting practices. The book distinguishes between fasting as spiritual discipline and fasting as manipulation, emphasizing that biblical fasting seeks God himself rather than attempting to secure divine favors. Piper connects fasting to broader themes of Christian hedonism—his signature teaching that God is most glorified when we are most satisfied in him—arguing that temporary self-denial of food can intensify our awareness of deeper spiritual satisfactions. He addresses practical concerns including length and frequency of fasts, physical considerations, and the relationship between fasting and prayer.

The work has maintained influence within Reformed and broader evangelical circles as one of the few contemporary theological treatments of fasting that moves beyond mere technique to explore its spiritual foundations. Piper's integration of rigorous biblical exegesis with pastoral sensitivity has made it a standard reference for churches seeking to recover this discipline. Who should read this: Christians curious about fasting but uncertain of its biblical warrant will find solid theological grounding here, as will pastors wanting to teach on spiritual disciplines with doctrinal precision. Those seeking purely practical guidance without theological foundation should look elsewhere.