Douglas MacMillan had a powerful ministry in Scotland. Indeed, my own wife is one of many who can point to him as the preacher under whose proclamation of the gospel she was herself converted. Professor MacMillan's own story is itself a dramatic account of the power of Christ to save. It is a delight to commend this little booklet, recounting his own experience of God's grace, to a new generation. ~ Carl R. Trueman (Paul Woolley Professor of Historical Theology and Church History, Westminster Theological Seminary, Philadelphia, Pennsylvania).