Home · Article · Author Interview: Donald S. Whitney on “How Can I Be Sure I’m a Christian?”Author Interview: Donald S. Whitney on “How Can I Be Sure I’m a Christian?” Donald S. Whitney discusses his book “How Can I Be Sure I’m a Christian?” and the satisfying certainty of eternal life By Don Whitney • May 2, 2019 Video Interviews Buy the book here. Topics Salvation Don Whitney Donald S. Whitney is a longtime pastor and author of numerous books on the Christian life, he is also founder of The Center for Biblical Spirituality and is author of numerous books including Spiritual Disciplines for the Christian Life and Praying the Bible. @DonWhitney | Website | Other posts Featured Collections Academic Lectures Bookstore Events