Religious diversity and pluralism is increasing in Latin America. The religious field that was some decades ago totally Catholic has changed radically. Not only Pentecostalism or NeoPentecostalism but other Evangelicals as well as independent churches of various denominations and forms, non-affiliated people and many diverse (ethnic, afro-American , New Age, etc.) and diffuse religious expressions are growing. The main argument of this paper is that this religious changes toward pluralism can be fully understood in the context of multiple modernities theory, provided that it be revised and modified. A new sociological approach is needed. The classical sociological concepts and theories, beginning with secularization, must be criticized and replaced with a more complex theoretical view. Latin American historical processes must be compared with what is happening in other regions of the world and not only with the West. World religions are answering each one by their own path to multiple interactions with modernities. The key understanding of changes must come from a better insight of popular religions worldwide. Latin American, Eastern Asia, Islam regions, are good examples of popular forms of religious revitalization that contrasts with the Northern European case. They put in evidence the fact that new ways of producing sense and spiritual search in non-Western geo-cultural areas are framing specific relationships between religion and modernities and bringing about new religious pluralisms.