Ibeji (meaning twin), is a Yoruba word. The Yoruba from South Western Nigeria and of neighbouring Benin Republic (formerly known as Dahomey) have the highest rate of twins in the world.
Ibeji (known as Ibejí, Ibeyí, or Jimaguas in Latin America) is the name of an Orisha representing a pair of divine twins in the Yoruba religion of the Yoruba people (originating from Yorubaland, an area in and around present-day Nigeria).

The orisa ibeji and, by association, the twins were attributed powers of fertility, prosperity, avenger, detector of thieves, and rainmaker. Propitiation and supplication with offerings and sacrifices are an integral part of the cult of twins.
The Ibeji represent the concept of duality—a fundamental principle in Yoruba thought. They embody the balance between opposites: male and female, light and dark, joy and sorrow, life and death. This duality is not seen as a conflict but as a necessary harmony that sustains the universe.