My entire story revolved around the religious belief of the Navajo and the Holy People. Here is a little blurb about them. There are four Holy people, each representing a direction on the compass and each possessing powers derived from the elements. Sort of like the Avatar, Air bender cartoon. In Native American culture they believe the number four is spiritual.
Holy People: The Navajo believed in good and evil. They believed that everything in the universe had a purpose - be it good or evil. It was important that the universe remained in balance. If not, evil could take over. Their ceremonies were designed to restore harmony.
Their Holy People were supernatural beings with the power to hurt or help the Navajo people.