The purpose of this research was to reflect on the revelation of a transcendent God and his relation with a finite human being in Paul Tillich. When asked about this relationship, the research is lead by a the idea of how can the knowledge of God, conditioned by human finitude, and how that knowledge is in danger of becoming a knowledge like any other. For the only way of man to know the reality around you is always through the subject-object structure. But God can not be an object among others. Thus, research aimed at studying the theology of Paul Tillich, an existentialist theology, which posits the concept of language as a symbol of faith as a way for the revelation of God is welcomed, without making God an object of idolatry and fanaticism. To answer these questions, the first time the research pervaded the limits of human reason, through the contribution of philosophy, making a relationship between human existence and finitude. In a second time the research established the relationship between the revelation of a transcendent God and human experience in everyday life. The experience of a revelation which requires approximation, which is not something outside, objective, but existential. Finally the search was halted on faith as an inherent dimension of the human being, a faith that communicates through symbols, mediated by language and tries to escape all the purposes of fundamentalist domination and imposition.