Theism

Theism, in the field of comparative religion, or when contrasted with atheism, is broadly defined as the belief in the existence of a deity or deities. In popular parlance, or when contrasted with deism, the term often describes the classical conception of god(s) that is found in the monotheistic and polytheistic religions; a belief in a god or in gods without the rejection of revelation as is characteristic of deism.

The term theism derives from the Greek theos meaning "god". The term theism was first used by Ralph Cudworth (1617–1688). In Cudworth's definition, they are "strictly and properly called Theists, who affirm, that a perfectly conscious understanding being, or mind, existing of itself from eternity, was the cause of all other things".

Atheism is commonly understood as rejection of theism in the broadest sense of theism, i.e. the rejection of belief in a god or gods. The claim that the existence of any deity is unknown or unknowable is agnosticism.

Monotheism (from Greek ) is the belief in theology that only one deity exists. Some modern day monotheistic religions include Christianity, Judaism, Islam, Baha'i Faith, Sikhism, Zoroastrianism, Eckankar and some forms of Hinduism.

Polytheism is the belief that there is more than one god. In practice, polytheism is not just the belief that there are multiple gods; it usually includes belief in the existence of a specific pantheon of distinct deities.

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