Theism

Theism, in the field of comparative religion, is the belief in the existence of deities. In popular parlance, the term theism often describes the classical conception of god(s) that is found in the monotheistic and polytheistic religions.

The term theism derives from the Greek theos meaning "god". The term theism was first used by Ralph Cudworth (1617–88). 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.

Types of Theism

Monotheism

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