Ọjọ is the supreme being of the Igala of the Niger–Benue confluence, conceived as the almighty, omniscient creator who dwells in the highest of the three Igala worlds, above the world of the living (efi'le) and the world of the dead. His full praise-name Ọjọchamachala marks him as the God who never fails. Though transcendent and seldom approached with sacrifice directly, he is held to work through ẹbọ — divine spirit — manifesting himself in the earth deity Anẹ, the ancestral Ibegwu and the various nature spirits, to whom he delegates authority over the spheres of human life. The name Ọjọ derives from the Igala word for 'day', the deified day being a Yoruboid inheritance shared with the Yoruba Ọlọ́jọ́.