Dear Brother Warner, It is now about forty years since, after the most careful and prayerful examination of the Word of God upon the subject, I embraced the views set forth in my work, entitled "Christian Perfection." All my subsequent examinations, and all my observations of facts, from that period to the present, have tended but in one direction-to confirm and render absolute my confidence in the truth and supreme importance of those views. Our Saviour has, Himself, stated definitely the condition on which the world will come to know, that "he came forth from God." "I in them, and thou in me, that they may be made perfect in one; and that the world may know that thou hast sent me, and hast loved them as thou hast loved me." My life-labours are, therefore, supremely directed to this one end-"the perfecting of the saints." Yours in the hands of Christ, Asa Mahan, London, Dec. 1, 1874. The experience of Dr. Mahan, as related towards the end of the work, goes to show that the reception of this grace was to him what the Old Methodists would call the "Second Blessing." He was a Professor in a College, and a successful Minister of the Gospel, and yet but a babe in grace. He had pointed many sinners to Christ for justification, and yet often felt as if he would give the world, if he had it, if some one would help him into the enjoyment of that which he dimly saw was in reversion for him. However, the time of his deliverance came, and now for about forty years he has lived and preached on a higher plane, and has seen a complete revolution of thought on this subject in the Church with which he is associated.... George Warner (Editor of the 1875 edition) ASA MAHAN (1799-1889) was America's foremost Christian educator, reformer, philosopher, and pastor. He was founding president of two colleges and one university, where he was able to inspire numerous reforms, publish authoritative philosophical texts, and promote powerful revivals like his close associate Charles Finney. He led the way on all important fronts while being severely persecuted. He introduced the new curriculum later adopted by Harvard, was the first to instruct and grant liberal college degrees to white and colored women, advised Lincoln during the Civil War, and among many other remarkable achievements, was a father to the early evangelical and holiness movements.