Do you long to be more like Jesus? Do you desire to live a holy life? Do you seek to answer the Spirit's call: "But as He who called you is holy, you also be holy in all your conduct, because it is written, 'Be holy, for I am holy'" (1 Peter 1:15- 16)? If so, this book was written for you. Unfortunately, many Christians are confused about what the Bible teaches about living a holy life. I've had students who came from good Gospel-preaching churches who were not sure they even believed in what they heard called "holiness." Either their church did not speak much about it or what they heard seemed legalistic or unattainable. It is sad that there is so much careless and sometimes contradictory teaching about this vital subject. The aim of this book is to be as biblically and contextually accurate as possible in the use of words and phrases such as "holy, holiness, sanctify, the Spirit-filled life, and entire sanctification." Further, I seek to limit my comments to what the Scriptures actually affirm. I do not attempt to answer every question that can be raised when talking about the biblical doctrine of sanctification. Rather, I seek to affirm what Scriptures affirm and leave unsaid what Scriptures do not say. I think any reader of Scripture will agree that God does command Christians to be holy. The burning question is: "What does God mean when He commands us to be holy?" This book is an attempt to answer that question.