Traditional Kogi religion is closely related to the structure of the cosmic universe that exists in dualistic expressions. On a cosmic level, the sun separates the universe into two hemispheres: the east/west and consequently a right/left. The Kogi use this dualistic notion to elaborate on a number of earthly divides: man/woman, male/female, heat/cold, light/dark, and right/left. They believe each of these groupings are complementary opposites. Within each pair, one cannot survive without the other. In the case of good(right)/evil(left), the Kogi believe committing a sin once in a while serves as a justification for the existence of good. These natural opposites are a way to keep the society balanced or “in agreement” (yuluka).