Why does theology matter? Where does the word theology come from? What makes Christian theology different from other kinds of spirituality? Questions like these are answered with clarity in this short and simple modernization of John Gill's introduction to theology. Every step of the way through this volume, the reader will find great truths in simple words. As each chapter builds upon another, the gospel shines forth as the light for understanding all of Scripture, doctrine, philosophy, and history revealing the importance of theology for the Christian. Included in this volume are discussion questions to let the reader consider each topic in greater depth. John Gill's What is theology? is perfect for new and mature Christians asking questions about why doctrine matters. Likewise, churches, small groups, and students will find this a quick and edifying volume full of Christ-exalting answers.