Book excerpt: The enneagram has become popular among evangelical Christians as a spiritualized personality typology that claims to help people better understand themselves and others. Several influential evangelical Christian leadership ministries have promoted the enneagram as a tool in forming and maintaining effective ministry teams, and the personality typology is now taught and embraced at several Christian universities. But uncertainty exists about the appropriateness of referring to the Enneagram as a Christian tool. Are pastors and Christian institutional leaders aware of the theology associated with the Enneagram? Enneagram Theology: Is It Christian? provides a biblical critique of the Enneagram’s underlying theology and exposes not only its foundational theological contradictions with orthodox evangelical theology but also some potential dangers to the church.