Thomas Chalmers exhorts readers to remove the tangles of sin through the expulsive power of a new and greater affection-desiring God.

Thomas Chalmers (1780-1847) was a Scottish preacher, theologian, and author who served as professor of theology at the University of St. Andrews and the University of Edinburgh. His many writings were primarily focused on the application of Christian ethics to the social issues of his day.

John Piper is founder and lead teacher of desiringGod.org and chancellor of Bethlehem College & Seminary. He served for thirty-three years as a pastor at Bethlehem Baptist Church in Minneapolis, Minnesota, and is the author of more than fifty books, including Desiring God; Don't Waste Your Life; and Providence.