Modernity understands, in principle, the distinction between the different spheres of life as economy and religion. However, the relationship between capitalism and religion is present in several social critiques in different modes of association. This article does not intend an inventory of possibilities, but to present a proposal of an analytical scheme that allows to deepen the possibilities of the role of the religious dimension as a critic or legitimation of the economic system. Each approach has its contribution to the understanding of society. However, the dialectical perspective, in which the mode of functioning of capitalism enhances its religious dimension, not as an external factor, but intrinsic to its purpose, allows a radical criticality. In this approach we can identify convergences in the comparative perspectives between Walter Benjamin and a sector of Liberation Theology.