Monotheism is an academic concept and a central field within religious studies that investigates belief systems predicated upon the existence of a single, supreme deity. Its study examines the historical development, theological doctrines, ritual practices, and socio-cultural manifestations of religions and philosophies affirming divine singularity, analyzing their origins, internal diversity, and comparative relationships across civilizations and epochs. Key characteristics explored include the attributes of the singular deity, such as omnipotence and transcendence, and the ethical and societal implications derived from this foundational tenet.