J.C.A. Gaskin 
Hume’s Philosophy of Religion [PDF ebook] 

Hume’s Philosophy of Religion brings together for the first time the whole range of Hume’s immensely important critique of religion. The major concern is with a clear discussion and presentation of philosophical issues wherever they occur in Hume’s writings, but items in the history of ideas, questions of interpretation and biographical details are introduced when they contribute to an understanding of Hume’s position. Already reviewed as a standard work on Hume on religion and as a good general introduction to Hume’s thought, this new edition has been extensively revised and extended. ‘…it is hard to imagine how a study of Hume on religion could have been at once more comprehensive, accurate, readable and scholarly than this…it is strongly to be recommended to all who have occasion to study or to teach Hume in colleges or universities.’ W.D.Hudson, Expository Times.