Eileen Barker states that there is no agreement on a definition, yet to study religion, a working definition is important. It provides parameters for the student. The study field for religion is very wide. Some may even interpret sport as a religion though not necessarily correctly.

Definitions may include deities, such as Islam and Christianity; others not (Buddhism and Shinto.) A broad definition of religion would generally include rituals, special symbols and artistic and music style, sacred or special texts and a set of doctrines, (good) moral and behavioural codes. Usually there are designated days and meeting places, for devotees to gather. The belief system will likely include spiritual self-progression and perhaps a promise of an after-life. There may also be special `holy' or days/celebrations throughout the year.

Having a clear definition has eluded scholars throughout the ages consensus upon a definition of what constitutes a religion...