Ishvara (Sanskrit: ईश्वर, ) is a concept in Hinduism, with a wide range of meanings that depend on the era and the school of Hinduism. In ancient texts of Indian philosophy, Ishvara means supreme soul, Brahman (Highest Reality), ruler, king or husband depending on the context. In medieval era texts, Ishvara means God, Supreme Being, personal god, or special Self depending on the school of Hinduism.