Summary: In this third biographical study, Piper gives us three excellent sketches of men who persevered in ministry and righteousness in the face of incredible difficulty. John Newton, the converted slave-trader who penned Amazing Grace, is a model in "habitual tenderness" towards the hurting (most notably the manic-depressive poet William Cowpoer). Charles Simeon is lesser known, but proves to be a powerful demonstration of endurance in the face of almost unrelenting opposition and affliction. His endurance was rooted primarily in his high view of God and his low view of self (what a word for the self-esteem gurus filling America's pulpits today!!). Finally, William Wilberforce, the greatest instrument God used in the abolishment of slavery in Britain, is studied, along with the doctrine which gave him strength and moved him into action (the doctrine is justification by faith). This is a great book and very encouraging. Highly recommended.