What is the theme in Song of Kali by Dan Simmons?

Religion is woven throughout Dan Simmons' horror novel, Song of Kali. As one character says of the majority religion, Hinduism, all things are as aspects of divinity. One cannot separate the sacred from the profane. Everything, even a a relief map meant to teach geography, can turn into an object of cult. The novel describes how sacred cattle routinely cause traffic jams by lying down on main roadways and young girls rush out to anoint themselves with sacred urine, should it become available.