The book of lights

"At the center of the novel is Gershon Loran--a young rabbi, the product of a parochial New York Jewish upbringing--whose early life [was] shaped by darkly irrational circumstances ... It is this young man--raised in the absolute belief that 'the Jewish religion made a fundamental difference in the world'--who at the end of the Korean War, finds himself a chaplain in a country where Judaism has played no part ... Gershon begins to see his own people--and himself--in a new light ... Gershon has the most disturbing ... of his visions--encompassing both light and dark, both good and evil, just as life must; just as, he begins to understand, Judaism must, if it is to remain a living faith."