What does monotheism refer to in religious belief?

Monotheism specifically refers to the belief in a single deity or god. This concept is foundational to major world religions such as Christianity, Islam, and Judaism, all of which advocate the existence of one supreme being who is central to their beliefs and practices. Monotheism emphasizes the exclusivity and unity of this divine being, distinguishing it from polytheism, where multiple gods are worshipped. The focus on a single god often influences followers' moral frameworks, community structures, and worldviews, highlighting the unique nature of this belief system within the spectrum of religious thought.