Interaction between law and religion as two modes of regulation of human behavior, is a reality that seems inevitable, despite the pretensions of mutual independence. The historical evolution of monopolistic systems (monistic or dualistic) of spiritual and temporal powers, leads to a state secularism, and the goal must be to respect fundamental human rights, including religious freedom, with its public repercussion. Although the state has often been unable to articulate this balance, the interaction of relevant social facts can be viable only through mutual recognition.