Religion has been defined in a wide variety of ways. Most definitions attempt to find a balance somewhere between overly sharp definition and meaningless generalities. Some sources have tried to use formalistic, doctrinal definitions while others have emphasized experiential, emotive, intuitive, valuational and ethical factors. Definitions mostly include:

* a notion of the transcendent or numinous, often, but not always, in the form of theism
* a cultural or behavioural aspect of ritual, liturgy and organized worship, often involving a priesthood, and societal norms of morality (ethos) and virtue (arete)
* a set of myths or sacred truths held in reverence or believed by adherents

Sociologists and anthropologists tend to see religion as an abstract set of ideas, values, or experiences developed as part of a cultural matrix. For example, in Lindbeck's Nature of Doctrine, religion does not refer to belief in "God" or a transcendent Absolute. Instead, Lindbeck defines religion as, "a kind of cultural and/or linguistic framework or medium that shapes the entirety of life and thought… it is similar to an idiom that makes possible the description of realities, the formulation of beliefs, and the experiencing of inner attitudes, feelings, and sentiments.”[8] According to this definition, religion refers to one's primary worldview and how this dictates one's thoughts and actions.

From good old Wikipedia