Monotheism is the belief in a single, all-powerful deity. This concept is central to several major religions, including Christianity, Islam, and Judaism. Monotheistic faiths emphasize the uniqueness and supremacy of one God, who is often seen as the creator and sustainer of the universe. In contrast to polytheism, which involves the worship of multiple gods, monotheism focuses on a singular divine presence. Followers of monotheistic religions typically engage in practices such as prayer, worship, and ethical living, guided by the teachings and scriptures associated with their faith, such as the Bible or the Quran.