Overview

Monotheism is the doctrine or conviction that there is only one god who is supreme, unique, and worthy of worship. In its broadest sense it affirms a single ultimate divine being as the source of reality and moral order. Monotheism is distinct from polytheism, the view that multiple deities exist, and from other positions such as pantheism or polytheistic systems found in cultures like Ancient Greece, Ancient Rome, and Ancient Egypt. Some complex religious traditions such as certain forms of Hinduism can contain monotheistic, henotheistic, or polytheistic elements depending on interpretation.

Monotheistic belief typically emphasizes several themes: the oneness and uniqueness of the deity, providence or governance of the world by that deity, and an ethical relationship between human beings and the divine. Different technical categories around monotheism include:

  • Absolute monotheism — the claim that only one divine being exists and no others have any divine status.
  • Monolatrism — the worship of one god without denying the existence of others.
  • Henotheism — devotion to a single god while accepting that other gods may be acknowledged by different groups.
  • Deism — belief in a single creator or higher being who does not intervene through revelation or miracles in the course of history; often rejects organized rituals and authoritative clerical structures (Deism).

Historical development

Scholars trace the emergence of monotheistic ideas to several ancient contexts. Early forms of devotion to a single god appear alongside older polytheistic frameworks, and some historians identify traditions such as Zoroastrianism and early Israelite religion as important precursors to later organized monotheisms. Over centuries these ideas developed into fully articulated systems within major world faiths. Distinctive doctrinal claims, sacred narratives, and institutional forms were shaped by social, political, and intellectual changes across the Mediterranean, Near East, and South Asia.

Major traditions and examples

Several large religious traditions are commonly described as monotheistic. These include:

  • Judaism — centered on covenantal belief in one God and a body of scripture and law.
  • Christianity — professes belief in one God; various traditions express this through doctrines such as the Trinity.
  • Islam — emphasizes absolute oneness of God (tawhid) and the role of revelation delivered by prophets.
  • Zoroastrianism — founded on the teachings of Zoroaster and historically important for monotheistic development.
  • Sikhism — teaches devotion to a single, formless God and ethical living.
  • Eckankar, the Cao Dai movement, and Tenrikyo — examples of more recent or syncretic traditions that include monotheistic elements.
  • Other faiths often described as monotheistic include the Baha'i Faith and certain reinterpretations of traditional practices; some pagan and neo-pagan groups likewise adopt single-deity perspectives.

Authority, revelation and practice

Monotheistic religions vary in how they conceive divine knowledge and communication. Some emphasize revealed scriptures and prophetic figures, while others prefer philosophical or experiential approaches. Questions of revelation and authority shape liturgy, law, and moral teaching: for example, many adherents look to sacred texts such as the Bible or the prophetic tradition and the Quran for guidance. Belief in particular prophets — for instance Jesus or Muhammad — is central in some traditions, while others stress a more direct, unaided relationship with the divine. The term revelation is used where a tradition asserts that foundational teachings were disclosed by the deity.

Distinctions and notable facts

Monotheism is not a single uniform position: theological differences can be wide, from strict unitarianism to doctrines that attempt to reconcile singular divine reality with diversity in divine persons or manifestations. Historically, monotheistic commitments have influenced law, ethics, art, and social institutions, and they have sometimes been associated with universalist claims about religion’s scope. Care is required when comparing traditions: terms and categories used by scholars (for example, monotheism versus henotheism) are analytic tools and do not always map neatly onto how communities describe themselves.

For further reading and comparative resources, see linked entries on God, the concept of religions, and studies of rituals and religious history.