Pastor Caleb Campbell has watched as Christian nationalism has taken over large swaths of the United States. And he's suffered the relational fallout of standing against it, both in his community and his church. While it's possible to be both a Christian and hold Christian nationalist ideas, Christian nationalism itself is an un-Christian worldview, rooted in ideas about power, race, and property that are irreconcilable with Christian faith. Campbell has come to see himself as a missionary to Christian nationalists, reaching out to them with the love and freedom of Jesus Christ. In Disarming Leviathan, Campbell equips Christians to minister to their Christian nationalist neighbors. He introduces the basics of Christian nationalism and explores the reasons so many people are attracted to it. He also addresses a variety of American Christian nationalist talking points and offers questions and responses that humbly subvert these claims and cultivate deeper, heart-level conversations. Christian nationalism is an established feature of the American landscape. Disarming Leviathan can help prepare us to confront it with compassion and hospitality, and with the truth of the good news of Jesus.