God is the English name given to a singular being in theistic and deistic religions (and other belief systems) who is either the sole deity in monotheism, or a single deity in polytheism.
God is most often conceived of as the supernatural creator and overseer of the universe. Theologians have ascribed a variety of attributes to the many different conceptions of God. The most common among these include omniscience (infinite knowledge), omnipotence (unlimited power), omnipresence (present everywhere), omnibenevolence (perfect goodness), divine simplicity, and eternal and necessary existence.
God has also been conceived as being incorporeal (immaterial), a personal being, the source of all moral obligation, and the "greatest conceivable existent". These attributes were all supported to varying degrees by the early Jewish, Christian and Muslim theologian philosophers, including Maimonides, Augustine of Hippo, and Al-Ghazali, respectively. Many notable medieval philosophers and modern philosophers developed arguments for the existence of God. Many notable philosophers and intellectuals have, in contrast, developed arguments against the existence of God.
History of monotheism
Some writers such as Karen Armstrong believe that the concept of monotheism sees a gradual development out of notions of henotheism and monolatrism. In the Ancient Near East, each city had a local patron deity, such as Shamash at Larsa or Sin at Ur. The earliest known claims of global supremacy of a specific god date to the Late Bronze Age, with Akhenaten's Great Hymn to the Aten, and, depending on dating issues, Zoroaster's Gathas to Ahura Mazda. Currents of monism or monotheism emerge in Vedic India in the same period, with e.g. the Nasadiya Sukta. Philosophical monotheism and the associated concept of absolute good and evil emerges in Classical Antiquity, notably with Plato (c.f. Euthyphro dilemma), elaborated into the idea of The One in Neoplatonism....