James Mackay served as Lord Advocate of Scotland (1979-84) and Lord Chancellor of Great Britain (1987-97). He is, in the words of a past President of the Law Society of Scotland, "not only an outstanding man in his profession, but one of the most brilliant Scottish scholars of all time." He is also a humble Christian who has served his Lord in church and state. This book seeks to introduce him to a wider Christian audience, while pointing out lessons that may be learned by others in political office and seeking to locate him in terms of the contemporary (largely American) "two kingdoms" controversy.