The paper proposes to show the initial steps of Martin Heidegger's thought, germany philosopher, which nourished the idea of constructing a new ontology founded under three important concepts: facticity, nothingness and temporality. Through those concepts Heidegger introduces something absolutely new into Philosophy's History, that is to think Being from your apophatic character. So the thinker deconstructs important notions of philosophical tradition as transcendence, ground, limit, truth, mystery, and presents expressive contributions to Philosophy and Sciences of Religion areas. Those contributions are presented at two levels: a) by lighting up the reinterpretation of the radical religious experience through new way to understand the question of nothing and emptiness, and b) by opening a dialogue more significant to phenomenon of apophatic mystic of west and far east. [ABSTRACT FROM AUTHOR]