Theism is the belief in the existence of one or more deities, often characterized by a personal relationship between the believer and the divine. This belief can take various forms, including monotheism, which is the belief in a single God, and polytheism, which involves the worship of multiple gods. Theistic beliefs are commonly found in major world religions such as Christianity, Islam, and Hinduism. Theists often engage in practices such as prayer, worship, and rituals to connect with the divine. Theism contrasts with atheism, the rejection of belief in any deity, and agnosticism, which holds that the existence of a deity is unknown or unknowable.