As empirical realities, religions are never homogenous. From the multitude of beliefs, objects, feelings, discourses and practices of everyday lived religion, to major historical disputes that have led to the formation of different schools or movements, to conflict-laden divisions at the intersection of religion and politics, an extraordinary variety of contexts and content constitute the ubiquitous constant of religions across centuries and cultures from early civilisations to the immigrant societies of the 21st century, across Europe and beyond. The multiplicity of ways in which individuals form relationships with religious traditions and the plural modes of how religious codes are appropriated add further complexity to this picture.