Christians are a people characterized by holiness. The Lord calls us to be holy as he is holy and commissions us to be separate from the world. Yet Christians also know that we daily fight indwelling sin. Rush Witt’s Diehard Sins is a clarion call for holiness that also provides us with meaningful and theologically rich resources to fight indwelling sin. This book is a careful and refreshing resource that every Christian should read.

— R. Albert Mohler Jr., President, The Southern Baptist Theological Seminary

Rush Witt addresses our most challenging sin struggles with practical biblical truth. He lays the theological foundation for understanding how progressive sanctification works and then builds a usable model for fighting sin and growing in grace. He draws from the wells of great Christian writers from the past while also offering helpful contemporary examples and illustrations. He speaks to the heart from a gospel-centered perspective. I personally benefited from reading this book and will commend it to the people I counsel and train.

— Jim Newheiser, Director of the Christian Counseling Program and Associate Professor of Christian Counseling and Practical Theology, Reformed Theological Seminary, Charlotte

Diehard Sins is written by a man who knows that we desperately need vivid and memorable mental weapons to combat our deeply rooted but hard-to-notice sins. While rightly reawakening the reader to the dire problem of our “little” sins, Rush emphasizes our hope in the gospel and offers more practical ways to meditate on the gospel than any book I have read in a long time. Realistic about both the slowness and the possibility of real growth in fighting our sin patterns, Diehard Sins will repay the time you invest with a rich harvest of ways to grow in daily godliness.
— J. Alasdair Groves, Director of Counseling, Christian Counseling and Educational Foundation New England

Your sins are hard to get rid of. They are diehard—they don’t leave easily. They hang on, corrupting every part of you. If you need help fighting stubborn sins that don’t ever seem to leave you alone, then this might be exactly the book you’ve been looking for.

— Deepak Reju, Pastor of Biblical Counseling and Family Ministry, Capitol Hill Baptist Church, Washington, DC

Rush Witt has written a comprehensive book explaining the underlying foundation that Christians must have in order to fight the sin that remains in us. These are precious truths that every Christian needs to understand, know, and remember. It is obvious that Witt has a high view of God, and I highly recommend this book.

— Martha Peace, Biblical counselor, conference speaker, best-selling author

Long-developed patterns of sin die hard because sin is rooted in the depths of our hearts. Christ alone offers hope! Rush Witt serves the Christian church by offering wise, biblical, Christ-centered help for understanding and fighting the seemingly “little” sins in our lives that threaten to quietly destroy us. Diehard Sins instructs, encourages, and challenges as Rush helps us to battle our persistent sins.

— Johnny M. Hunt, Senior Pastor, First Baptist Church, Woodstock

In Diehard Sins, Rush demonstrates that God’s revelation is practical. He helps readers to take up arms against our most buried and besetting sins. I most appreciate the way Rush encourages readers with the hope of biblical heart change—especially readers who are discouraged from wrestling with deep-rooted vices in their own strength. Not only will this book encourage you, but it will give you confidence in God’s practical wisdom for fighting the sins that are hardest to kill.

— Dale Johnson, Executive Director, Association of Certified Biblical Counselors

Rush Witt has written a book that will be very helpful to those who read it and heed it. People who read and apply the biblically accurate and practical contents of the book will be greatly assisted in the process of sanctification—becoming more and more conformed to the image of Jesus Christ.

—Wayne Mack, Author, A Fight to the Death: Taking Aim at Sin Within and God’s Solutions to Life’s Problems: Radical Change by the Power of God

If you struggle with sin—which describes all of us—Rush has provided great encouragement and help in Diehard Sins. Read it and be encouraged to move forward with joy and renewed hope!

— Amy Baker, Certified Counselor, Association of Certified Biblical Counselors; Instructor and Counselor, Faith Biblical Counseling Ministries

Diehard Sins is of great benefit to any believer and a source of encouragement to any local congregation living the daily Christian life. Rush Witt theologically and thoroughly deals with the realities of sin’s pervasive and destructive nature—but he doesn’t leave us hopeless. He supplies practical tools as a reminder that although sin may be great, there are even greater, conquering provisions found in Christ.

— Jose Abella, Lead Pastor, Providence Road Church, Miami, Florida

Rush Witt has taken a great theological model used elsewhere for helping others and has applied it to personal growth. I love that he is helping us to wrestle with our identity in Christ, which redefines our persistent sin struggles. This book is both theological and practical.

— Jason Lee, Dean and Professor of Theological Studies, Cedarville University