Religious responses to the problem of evil are concerned with reconciling the existence of evil and suffering with an omnipotent, omnibenevolent, and omniscient God. The problem of evil is acute for monotheistic religions such as Christianity, Islam, and Judaism whose religion is based on such a God. But the question of "why does evil exist?" has also been studied in religions that are non-theistic or polytheistic, such as Buddhism, Hinduism, and Jainism.