Twenty + One: Twenty-One Letters on Faith, Trust, and God's Kingdom by Christian A. Dickinson is a heartfelt collection of personal letters written by a father to his children, offering gentle, Scripture-centered guidance through the Christian journey. Forged in seasons of doubt, suffering, waiting, and ordinary faithfulness, these twenty-one letters trace five deepening movements: coming to believe and holding on in faith; resting in God's unchanging character through trust; embracing the gospel as good news breaking into history; meeting God tenderly in pain and grief; and living out love as the heart of God's kingdom.

Plainspoken and humble, the book makes no claim to originality or formulas. Instead, it serves as a witness—pointing relentlessly to ancient, tested truths from Scripture while sharing lived experience. Each letter stands alone yet builds cumulatively, inviting readers to return in joy or grief, confidence or uncertainty. Reflection questions at the end of each part encourage personal engagement, helping truths take root over time.

The letters emphasize surrender over control, dependence over self-reliance, and redemption in suffering—echoing biblical patterns like manna in the wilderness, Christ's garden prayer, and love strong as death. Written first as a father's inheritance, they are now humbly offered to any reader seeking companions for the long road of faith.

This devotional work speaks to believers navigating real-life tensions: intellectual doubt, prolonged hardship, church disappointment, unanswered prayers, grief, marriage, friendship, and eternal hope. It reminds us that God's kingdom is already breaking in—reigning, redeeming, and drawing near—even when not fully seen.