Sittser is the author of Love One Another: Becoming the Church Jesus Longs For (IVP, 2008); Water from a Deep Well: Christian Spirituality from Early Martyrs to Modern Missionaries (IVP, 2007), which won the Logos Book Award; When God Doesn’t Answer Your Prayer (Zondervan, 2003), which won the 2005 Gold Medallion Award in the Christian Living category, from the Evangelical Christian Publishers Association; The Will of God as a Way of Life (Zondervan, 2000); A Cautious Patriotism: the American Churches and the Second World War (U. of NC Press, 1998), and The Adventure (IVP, 1985). He is best known for his bestseller, A Grace Disguised: How the Soul Grows Through Loss (Zondervan, 1996), which has been translated into more than 15 languages.
Sittser has written many book reviews and papers. Most recently he has authored "The History of Christian Spirituality," a major introductory essay for the Dictionary of Christian Spirituality (Zondervan Academic, forthcoming), "The Desert Fathers and Mothers," in A Guide to Christian Spiritual Classics (IVP, forthcoming); "Catechumenate," an article for the Dictionary of Christian Spirituality (Zondervan Academic, forthcoming); "The Battle Without and Within: The Psychology of Sin and Salvation in the Desert Fathers and Mothers," in the Journal of Spiritual Formation and Soul Care (2009), "From Mountaintop to Mundane Life: The Purpose of Spiritual Retreats," in Conversations (2009), "Protestant Missionary Biography as Written Icon," in Christian Scholars Review (2007), as well as several review essays, including "Faithful Citizens," in Christian Century (2007) and "The Civil War Letters of Joseph Hopkins Twichell: A Chaplain’s Story," in Books & Culture (2008). He also speaks at numerous conferences and on college campuses, most recently Westmont College, Hope College, and Northwestern College.
Sittser won the Hope College Distinguished Alumni Award in 2009. He has also been voted Most Influential Professor seven times by the Whitworth senior class. During graduate school he also won the Jacob K. Javits National Graduate Fellowship award. Finally, he serves on the Camp Spalding Board, the Global Neighborhood Board, and the Northwestern College Board of Trustees.
Sittser was named Most Influential Professor by the Whitworth Class of 2011.