The religion of the Igbo people is called Odinani, a concept that encompasses the traditional religious and spiritual thoughts and practices of the Igbo people. It is a pantheistic faith.
In Odinani, there is a supreme God called Chukwu ("Great Spirit") who existed before all things, and there are also smaller deities called Alusi. There are different Alusi for various purposes, the most important of which is the Goddess of the Earth, called Ala.
Chukwu is the supreme deity in the Odinani belief. Chukwu represents the unknown, infinitely powerful, indefinable, absolute supreme deity that encompasses all space in itself and in the universe, in the traditional Igbo spiritual belief system and its mythology.
The Alusi are minor deities in Odinani, each of which is responsible for a specific aspect of nature or abstract concept.
Some of the most notable Alusi are Igwekaala, the god of heaven; Amadioha, the god of thunder and lightning; Ikenga, the god with horns of fortune and industry; Ahobinagu, the god of the forests; Aro, the god of judgment; Agwu, the god of divination and healing; and Ogbunabali, the god of death.