Sir James Frazer's The Golden Bough

"The Golden Bough: A Study in Magic and Religion is a wide-ranging, comparative study of mythology and religion, written by Scottish anthropologist Sir James George Frazer (1854–1941). It first was published in two volumes in 1890; the third edition, published 1906–15, comprised twelve volumes. It was aimed at a broad literate audience raised on tales as told in such publications as Thomas Bulfinch's The Age of Fable, or Stories of Gods and Heroes (1855). It offered a modernist approach to discussing religion, treating it dispassionately[1] as a cultural phenomenon rather than from a theological perspective. The impact of The Golden Bough on contemporary European literature was substantial." -From Wikipedia

"The Golden Bough attempts to define the shared elements of religious belief. Its thesis is that old religions were fertility cults that revolved around the worship of, and periodic sacrifice of, a sacred king.

This king was the incarnation of a dying and reviving god, a solar deity who underwent a mystic marriage to a goddess of the Earth, who died at the harvest, and was reincarnated in the spring. Frazer claims that this legend is central to almost all of the world's mythologies."-Taken from Wikipedia

Read The Golden Bough here