Private or secret prayer is the life-blood of the Christian, and the great men and women of God down the ages have testified to its effect in their own lives. Luther said he could not survive a busy day without spending two or three hours alone with God.

Drawing on the experience of Luther, Spurgeon, Muller, Whitefield and Wesley, David McIntyre writes about the hidden life of prayer - what it costs, how it is sustained and what it produces. A short classic, and one of the books most often recommended on the subject.