Theism is broadly defined as the belief in the existence of the Supreme Being or deities. In common parlance, or when contrasted with deism, the term often describes the classical conception of God that is found in monotheism (also referred to as classical theism) - or gods found in polytheistic religions—a belief in God or in gods without the rejection of revelation as is characteristic of deism.
In 2009, the World Union of Deists published a book on deism, Deism: A Revolution in Religion, A Revolution in You written by its founder and director, Bob Johnson. This book focuses on what deism has to offer both individuals and society.
Thus, monotheism is a belief in the existence of a single god. Monotheism is usually contrasted with polytheism, which is the belief in many gods, and atheism, which is the absence of any belief in gods.
While pantheism says that God and the universe are coextensive, panentheism claims the God is greater than the universe and that the universe is contained within God. Panentheism holds that God is the “supreme effect” of the universe.
Most of the polytheistic deities of ancient religions, with the notable exceptions of the Ancient Egyptian and Hindu deities, were conceived as having physical bodies. Polytheism is a type of theism. Within theism, it contrasts with monotheism, the belief in a singular God, in most cases transcendent.