The phenomenon of secularisation is one of the most studied, analysed and discussed in the academic field of religions. It is a phenomenon that emerged with the process of social change that the modern era brought with it. At first it was limited to a few elites and from the middle of the 20th century it has been generalised to the entire population in Western Europe. Undoubtedly, the modernising process caused an alteration in the reality of the religious experience of the general population.

Secularisation has become an object of interdisciplinary study in which the religious sciences, especially genealogy, history and phenomenology, interact. But also theology, philosophy, sociology, anthropology, political sciences, history, etc.