Books

Chris has authored and co-authored multiple books addressing a variety of subjects.  

Book cover titled "The Upside Down Kingdom" by Chris Castaldo, featuring a stylized illustration of a king with a crown, holding a scepter, with a backdrop of castles, mountains, and clouds, in shades of green and brown.

The Upside Down Kingdom

Wisdom for Life from the Beatitudes

In our sinful world, we often struggle with anxiety, loneliness, and heartache. Everywhere we look, we see broken families and divided communities. How can we truly cultivate God’s kingdom “on earth as it is in heaven” in such a broken place?

The Upside Down Kingdom applies the wisdom of Jesus’ Beatitudes, the counterintuitive vision of God’s new creation, the “blessed” life that he intends for his people—not just in the future, but here and now.

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The book cover features an image of a man wearing white traditional attire and a white cap, seen from behind, overlooking a crowd. The title reads, 'Why Do Protestants Convert?' with the authors' names, Brad Littlejohn and Chris Castaldo, at the bottom. The foreword is by Carl Trueman.

Why Do Protestants Convert?

A strange phenomenon has gripped Protestantism in recent decades: many of its best and brightest thinkers have converted to Roman Catholicism. Likewise, many earnest, normal believers have found Protestantism shallow in doctrine, history, ethics, and worship, and made the leap to Rome.

How can Protestants make sense of this? In this short and penetrating book, Brad Littlejohn and Chris Castaldo insightfully diagnose the psychological, theological, and sociological factors behind Protestant conversions to Rome.

With refreshing honesty, they find many converts’ criticisms of contemporary Protestantism to be warranted but argue that historic magisterial Protestantism has within it the answers to these objections and the resources for a Protestant renewal.

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Cover of a book titled 'The Unfinished Reformation' by Gregg Allison and Chris Castaldo, discussing Protestant and Catholic divisions after 500 years, featuring a cross symbol in green and red.

Understanding the Reformation

What Unites and Divides Catholics and Protestants after 500 Years

Five hundred years ago, a Catholic monk and launched a gospel revolution in the history of Christianity. Today there continues to be several unresolved issues between the Protestant and Catholic churches, and many experience this ongoing division within their family and among friends and neighbors.

Written in an accessible and informative style, Gregg Allison and Chris Castaldo provide a brief and clear guide to the key points of unity and divergence between Protestants and Catholics today.

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The book cover titled "Justified in Christ" by Chris Castaldo, featuring images of Martin Luther above and John Henry Newman below, with a subtitle about doctrines and implications of Peter Martyr Vermigli and John Henry Newman.

Justified in Christ

The Doctrines of Peter Martyr Vermigli and John Henry Newman and Their Ecumenical Implications

Analyzing and comparing the doctrines of justification held by a legendary nineteenth-century Catholic, John Henry Newman, and an Italian hero of the Reformation, Peter Martyr Vermigli, this book uncovers abiding opportunities, as well as obstacles at the Catholic-Protestant intersection.

In addition to advancing scholarship on several issues associated with Newman’s and Vermigli’s doctrines, this works also illuminates reasons and attendant circumstances for conversion across the Tiber.

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The cover of a publication titled "Davenport Digests" featuring a question about what divides Catholics and Protestants, authored by Chris Castaldo. Part of the cover displays a religious painting of Jesus with a raised hand, with a focus on his expressive face and detailed beard, wearing a robe with pink and green tones.

What Divides Catholics and Protestants on Justification?

Discover the heart of the centuries-old debate on salvation in What Divides Catholics and Protestants on Justification. This concise booklet explores the key differences in how each tradition views grace, faith, and works, providing clarity on a topic central to Christian theology. Perfect for those seeking to understand the roots of these distinctions and their lasting impact on faith today.

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Book cover titled 'Talking with Catholics about the Gospel: A Guide for Evangelicals' by Chris Castaldo. The background features a sunset over a city with a domed building, likely a Catholic church, and a bridge over a river.

Constructive Conversations with Catholic Friends & Loved Ones

There are 60 million Catholics in the United States, representing one of the country’s largest demographics. In Talking with Catholics about the Gospel, author Chris Castaldo answers the question: How can evangelical Protestants, most of whom are not from a Catholic background, understand and relate to Catholics in spiritual conversations?

Written in accessible, non-technical language, this book offers readers encouragement and practical insights for gracious and worthwhile discussions of faith with Catholic believers.

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Cover of a book titled 'How Did the Catholic Church Become Roman?' by Chris Castaldo, featuring an interior view of a grand, ornate church with domed ceiling and classical architectural details.

How Did the Catholic Church Become Roman?

Explore the fascinating history behind the evolution of the Catholic Church in How Did the Catholic Church Become Roman? This Davenant Digest traces the Church’s journey from its early beginnings to its establishment as a powerful institution rooted in Rome. Ideal for readers interested in understanding the pivotal events and decisions that shaped the identity of the Roman Catholic Church today.

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Close-up of a book cover titled 'Journeys of Faith' with a background image of large, arched church windows with stained glass and a wooden pew in the foreground.

Journeys of Faith

Evangelicalism, Eastern Orthodoxy, Catholicism, and Anglicanism

Research indicates that, on average, Americans change their religious affiliation at least once during their lives. Journeys of Faith examines the movement between four Christian traditions and what led believers to make a shift.

Journeys of Faith provides readers with a series of first-hand accounts of thoughtful Christians changing religious affiliation or remaining true to the traditions they have always known and their rationale for those decisions.

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Book cover titled 'Holy Ground: Walking with Jesus as a Former Catholic' by Chris Castaldo. The cover shows a view of a person standing on a stone and grass pathway, wearing brown shoes and blue plaid pants.

Holy Ground

Walking with Jesus as a Former Catholic

Drawing on hundreds of interviews with former Catholics who are now Evangelical Protestants, Chris has spent two years uncovering their most burning questions and concerns. In Holy Ground, he walks readers through these issues with personal warmth and pastoral sensitivity.

If you are tired of scratching your head in confusion about how your Catholic background relates to your current faith and why on earth your Catholic family believes you’ve gone off the deep end, you need this book. More than providing historical perspective, theological reflection, and practical lessons, Holy Ground is a dynamic exploration of how to emulate the grace and truth balance of the Lord Jesus Christ in relation to the Catholic people we love.

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