First published in 1993. Including a primary and secondary bibliography which consists of indexes, book catalogues, articles, reviews and Ph.D dissertations. With annotated notes form the author to convey the items’ main idea, argument, purpose or general substance and cross-references where relevant.

G.H. Percival in the book "The Incarnate Purpose" brings to light essays that discuss the influence of the spiritual trinity on the fundamental principles of Christianity. These essays discuss the concept of the spiritual unity of life in terms of its history, core beliefs and doctrines, and the rights and responsibilities of its faithful. This book contains titles including the spirit of truth, the evidence of things unseen, the alchemy of love, and more.

Since its founding by Jacques Waardenburg in 1971, Religion and Reason has been a leading forum for contributions on theories, theoretical issues and agendas related to the phenomenon and the study of religion. Topics include (among others) category formation, comparison, ethnophilosophy, hermeneutics, methodology, myth, phenomenology, philosophy of science, scientific atheism, structuralism, and theories of religion. From time to time the series publishes volumes that map the state of the art and the history of the discipline.