The classic study which relates magic and religion to the institutions and folk customs on which they are based.
In The Golden Bough, James George Frazer, an expert social anthropologist, explains the ancient origins of the world's myths, rituals, and religions. He shows the similarities between many cultures' strange superstitions, such as animal and human sacrifice, fertility ritual, community cleansing rituals, and others.
He begins with the question of why, at Nemi in prehistoric Greek times, a warrior priest known as the King of the Wood kept his position by fighting for his life, which could be threatened at any time by his successor and murderer. By attempting to explain this ancient tradition, Frazer examines similarities between religious beliefs and shows how the belief in magic and the worship of nature was gradually transformed into the worship of religious kings and gods.
Controversially, many elements of Christianity are included, such as Christ's crucifixion and the fact that many Christian holidays coincide with the dates of prehistoric pagan rituals. For the diligent skeptic of Frazer's ideas, I would advise reading the full, multi-volume edition, which includes the archeological evidence for the theories.
NY. Criterion. 1959. 726p.