Each religious tradition is a repository of a core that is entrusted revelatory. Through it accessing a glimpse of reality. Without grasping this core is impossible to understand the constellation of symbols and beliefs that characterize every religion and emanating from such epicenters. This essay ventures into revelatory experience of the major religious configurations of humanity with the intention of establishing criteria for discernment to assess the quality of such phenomena and manifestations. The author tries to approach the mystical background behind each tradition, pointing out that involved all true religious experience: the ability to open to a greater reality in three dimensions which is the Real, that is, toward a greater sense of transcendence, towards greater finesse and understanding of the human and greater respect and reverence for nature. To do this, you drive various aspects that constitute the phenomenon of revelation: the cultural, psychological, institutional, epochal and above all, the interior layout. Ultimately, the author's position is that human beings are constitutively open to greater reality, and we are only at the beginning of the opening.